ci: Upgrade actions

Note that actions/upload-artifact and actions/download-artifact v2 -> v4
upgrade involves a breaking change:
https://github.com/actions/upload-artifact/blob/main/docs/MIGRATION.md

.github/workflows/default.yml

@@ -6,16 +6,16 @@ jobs:
 
   sdist:
     if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         lfs: true
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.12'
     - name: Install dependencies
       run: |
         python -m pip install -U pip setuptools wheel
@@ -24,9 +24,9 @@ jobs:
         python setup.py sdist
         ls -lh dist
     - name: Upload artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
-        name: dist
+        name: dist-src
         path: dist
 
 
@@ -37,8 +37,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04]
-        pyver: [cp311-cp311]
+        os: [ubuntu-22.04]
+        pyver: [cp312-cp312]
         arch: [x86_64, aarch64]
 
     env:
@@ -47,16 +47,16 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         lfs: true
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.12'
     - name: Set up QEMU
       id: qemu
-      uses: docker/setup-qemu-action@v2
+      uses: docker/setup-qemu-action@v3
     - name: Show available platforms
       run: echo ${{ steps.qemu.outputs.platforms }}
     - name: Install dependencies
@@ -89,9 +89,9 @@ jobs:
                 dist/backend.ai_krunner_static_gnu-${PKGVER}-py3-none-${GLIBC_PTAG}.${MUSL_PTAG}.${MACOS_PTAG}.whl
         ls -lh dist
     - name: Upload artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
-        name: dist
+        name: dist-${{ matrix.os }}-${{ matrix.pyver }}-${{ matrix.arch }}
         path: dist
 
 
@@ -105,19 +105,20 @@ jobs:
       id-token: write
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
       - name: Install dependencies
         run: |
           python -m pip install -U pip setuptools wheel
       - name: Download distributions
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
-          name: dist
+          pattern: dist-*
+          merge-multiple: true
           path: dist
       - name: >-
           Publish 🐍📦 to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@release/v1