diff --git a/.github/workflows/__multi-language-autodetect.yml b/.github/workflows/__multi-language-autodetect.yml
index 618567e453..139630ad9b 100644
--- a/.github/workflows/__multi-language-autodetect.yml
+++ b/.github/workflows/__multi-language-autodetect.yml
@@ -28,36 +28,20 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-20230403
           - os: macos-12
             version: stable-20230403
-          - os: ubuntu-latest
-            version: stable-v2.13.5
           - os: macos-12
             version: stable-v2.13.5
-          - os: ubuntu-latest
-            version: stable-v2.14.6
           - os: macos-12
             version: stable-v2.14.6
-          - os: ubuntu-latest
-            version: stable-v2.15.5
           - os: macos-latest
             version: stable-v2.15.5
-          - os: ubuntu-latest
-            version: stable-v2.16.6
           - os: macos-latest
             version: stable-v2.16.6
-          - os: ubuntu-latest
-            version: default
           - os: macos-latest
             version: default
-          - os: ubuntu-latest
-            version: latest
           - os: macos-latest
             version: latest
-          - os: ubuntu-latest
-            version: nightly-latest
           - os: macos-latest
             version: nightly-latest
     name: Multi-language repository
diff --git a/.github/workflows/__scaling-reserved-ram.yml b/.github/workflows/__scaling-reserved-ram.yml
index 4c4b02f684..ecf944bc42 100644
--- a/.github/workflows/__scaling-reserved-ram.yml
+++ b/.github/workflows/__scaling-reserved-ram.yml
@@ -28,36 +28,20 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-20230403
           - os: macos-12
             version: stable-20230403
-          - os: ubuntu-latest
-            version: stable-v2.13.5
           - os: macos-12
             version: stable-v2.13.5
-          - os: ubuntu-latest
-            version: stable-v2.14.6
           - os: macos-12
             version: stable-v2.14.6
-          - os: ubuntu-latest
-            version: stable-v2.15.5
           - os: macos-latest
             version: stable-v2.15.5
-          - os: ubuntu-latest
-            version: stable-v2.16.6
           - os: macos-latest
             version: stable-v2.16.6
-          - os: ubuntu-latest
-            version: default
           - os: macos-latest
             version: default
-          - os: ubuntu-latest
-            version: latest
           - os: macos-latest
             version: latest
-          - os: ubuntu-latest
-            version: nightly-latest
           - os: macos-latest
             version: nightly-latest
     name: Scaling reserved RAM
diff --git a/.github/workflows/__swift-custom-build.yml b/.github/workflows/__swift-custom-build.yml
index 60560f2b50..040728a595 100644
--- a/.github/workflows/__swift-custom-build.yml
+++ b/.github/workflows/__swift-custom-build.yml
@@ -28,16 +28,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: latest
           - os: macos-latest
             version: latest
-          - os: ubuntu-latest
-            version: default
           - os: macos-latest
             version: default
-          - os: ubuntu-latest
-            version: nightly-latest
           - os: macos-latest
             version: nightly-latest
     name: Swift analysis using a custom build command
diff --git a/.github/workflows/__unset-environment.yml b/.github/workflows/__unset-environment.yml
index 7d2e3a9740..024c496d13 100644
--- a/.github/workflows/__unset-environment.yml
+++ b/.github/workflows/__unset-environment.yml
@@ -28,21 +28,17 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-20230403
-          - os: ubuntu-latest
-            version: stable-v2.13.5
-          - os: ubuntu-latest
+          - os: macos-12
             version: stable-v2.14.6
-          - os: ubuntu-latest
+          - os: macos-latest
             version: stable-v2.15.5
-          - os: ubuntu-latest
+          - os: macos-latest
             version: stable-v2.16.6
-          - os: ubuntu-latest
-            version: default
-          - os: ubuntu-latest
+          - os: macos-latest
             version: latest
-          - os: ubuntu-latest
+          - os: macos-latest
+            version: default
+          - os: macos-latest
             version: nightly-latest
     name: Test unsetting environment variables
     permissions:
@@ -79,6 +75,9 @@ jobs:
       - uses: ./../action/.github/actions/setup-swift
         with:
           codeql-path: ${{ steps.init.outputs.codeql-path }}
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '>=1.21.0'
       - name: Build code
         shell: bash
     # Disable Kotlin analysis while it's incompatible with Kotlin 1.8, until we find a
diff --git a/.github/workflows/debug-artifacts.yml b/.github/workflows/debug-artifacts.yml
index 30e6550f7e..038a5337e9 100644
--- a/.github/workflows/debug-artifacts.yml
+++ b/.github/workflows/debug-artifacts.yml
@@ -25,9 +25,10 @@ jobs:
       fail-fast: false
       matrix:
         version:
-        - stable-20230403
-        - stable-v2.13.5
-        - stable-v2.14.6
+        # TODO: Once CLI v2.17.4 is available and the platform is switched back to ubuntu,
+        #       stable-20230403, stable-v2.13.5, and stable-v2.14.6 can be added back to this matrix,
+        #       and the VERSIONS variable in the bash script below. 
+        #       Prior to CLI v2.15.1, ARM runners were not supported by the build tracer.
         - stable-v2.15.5
         - stable-v2.16.6
         - default
@@ -37,7 +38,7 @@ jobs:
     env:
       CODEQL_ACTION_TEST_MODE: true
     timeout-minutes: 45
-    runs-on: ubuntu-latest
+    runs-on: macos-latest # TODO: Switch back to ubuntu for `nightly-latest` and `latest` once CLI v2.17.4 is available.
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
@@ -75,7 +76,7 @@ jobs:
       - name: Check expected artifacts exist
         shell: bash
         run: |
-          VERSIONS="stable-20230403 stable-v2.13.5 stable-v2.14.6 stable-v2.15.5 stable-v2.16.6 default latest nightly-latest"
+          VERSIONS="stable-v2.15.5 stable-v2.16.6 default latest nightly-latest"
           LANGUAGES="cpp csharp go java javascript python"
           for version in $VERSIONS; do
             pushd "./my-debug-artifacts-${version//./}"
diff --git a/pr-checks/checks/multi-language-autodetect.yml b/pr-checks/checks/multi-language-autodetect.yml
index 379938c5a2..89efa2ca5c 100644
--- a/pr-checks/checks/multi-language-autodetect.yml
+++ b/pr-checks/checks/multi-language-autodetect.yml
@@ -1,6 +1,7 @@
 name: "Multi-language repository"
 description: "An end-to-end integration test of a multi-language repository using automatic language detection"
-operatingSystems: ["ubuntu", "macos"]
+# TODO: Add ubuntu back for `nightly-latest` and `latest` once CLI v2.17.4 is available.
+operatingSystems: ["macos"] 
 steps:
   - uses: actions/setup-go@v5
     with:
diff --git a/pr-checks/checks/scaling-reserved-ram.yml b/pr-checks/checks/scaling-reserved-ram.yml
index cd8d56746e..acd6c2b24b 100644
--- a/pr-checks/checks/scaling-reserved-ram.yml
+++ b/pr-checks/checks/scaling-reserved-ram.yml
@@ -1,6 +1,7 @@
 name: "Scaling reserved RAM"
 description: "An end-to-end integration test of a multi-language repository with the scaling_reserved_ram feature flag enabled"
-operatingSystems: ["ubuntu", "macos"]
+# TODO: Add ubuntu back for `nightly-latest` and `latest` once CLI v2.17.4 is available.
+operatingSystems: ["macos"]
 env:
   CODEQL_ACTION_SCALING_RESERVED_RAM: true
 steps:
diff --git a/pr-checks/checks/swift-custom-build.yml b/pr-checks/checks/swift-custom-build.yml
index a5da41f568..b66c45e9e6 100644
--- a/pr-checks/checks/swift-custom-build.yml
+++ b/pr-checks/checks/swift-custom-build.yml
@@ -1,7 +1,8 @@
 name: "Swift analysis using a custom build command"
 description: "Tests creation of a Swift database using custom build"
 versions: ["latest", "default", "nightly-latest"]
-operatingSystems: ["ubuntu", "macos"]
+# TODO: Add ubuntu back for `nightly-latest` and `latest` once CLI v2.17.4 is available.
+operatingSystems: ["macos"] 
 env:
   DOTNET_GENERATE_ASPNET_CERTIFICATE: "false"
 steps:
diff --git a/pr-checks/checks/unset-environment.yml b/pr-checks/checks/unset-environment.yml
index 2161bfc9dd..445ad99e27 100644
--- a/pr-checks/checks/unset-environment.yml
+++ b/pr-checks/checks/unset-environment.yml
@@ -1,6 +1,8 @@
 name: "Test unsetting environment variables"
 description: "An end-to-end integration test that unsets some environment variables"
-operatingSystems: ["ubuntu"]
+# TODO: Switch back to all versions once CLI v2.17.4 is available and running on ubuntu again.
+versions: ["stable-v2.14.6", "stable-v2.15.5", "stable-v2.16.6", "latest", "default", "nightly-latest"] 
+operatingSystems: ["macos"] # TODO: Switch back to ubuntu for `nightly-latest` and `latest` once CLI v2.17.4 is available.
 steps:
   - uses: ./../action/init
     id: init
@@ -10,6 +12,9 @@ steps:
   - uses: ./../action/.github/actions/setup-swift
     with:
       codeql-path: ${{ steps.init.outputs.codeql-path }}
+  - uses: actions/setup-go@v5
+    with:
+      go-version: '>=1.21.0'
   - name: Build code
     shell: bash
     # Disable Kotlin analysis while it's incompatible with Kotlin 1.8, until we find a