chore: Update .github/workflows/code-coverage.yaml in artichoke/boba

Managed by Terraform.

## Contents

```
---
name: Code Coverage
"on":
  push:
    branches:
      - trunk
  pull_request:
    branches:
      - trunk
jobs:
  generate:
    name: Generate
    permissions:
      id-token: write
      contents: read
    runs-on: ubuntu-latest
    env:
      RUST_BACKTRACE: 1
      CARGO_NET_GIT_FETCH_WITH_CLI: true
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install nightly Rust toolchain
        uses: artichoke/setup-rust/code-coverage@v1

      - name: Setup grcov
        run: |
          release_url="$(curl \
            -H "Accept: application/vnd.github.v3+json" \
            https://api.github.com/repos/mozilla/grcov/releases | \
            jq -r '.[0].assets | map(select(.browser_download_url | test(".*x86_64-unknown-linux-musl.tar.bz2$"))) | .[0].browser_download_url')"

          curl -sL "$release_url" | sudo tar xvj -C /usr/local/bin/

      - name: Generate coverage
        env:
          LLVM_PROFILE_FILE: "boba-%m-%p.profraw"
          RUSTFLAGS: "-C instrument-coverage"
          # Unstable feature: rust-lang/rust#56925
          RUSTDOCFLAGS: "-C instrument-coverage -Z unstable-options --persist-doctests target/debug/doctests"
        run: cargo test

      - name: Generate HTML report
        run: grcov boba*.profraw --source-dir . --keep-only 'src/**/*.rs' --binary-path target/debug -t html --filter covered -o target/coverage

      - name: Generate detailed JSON report
        run: grcov boba*.profraw --source-dir . --keep-only 'src/**/*.rs' --binary-path target/debug -t covdir --filter covered -o target/coverage/coverage.json

      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@master
        if: github.ref == 'refs/heads/trunk'
        with:
          aws-region: us-west-2
          role-to-assume: arn:aws:iam::447522982029:role/gha-boba-s3-backup-2022082021520156830000000a
          role-session-name: GitHubActionsRustCodeCoverage@boba

      - name: Show AWS caller identity
        if: github.ref == 'refs/heads/trunk'
        run: aws sts get-caller-identity

      - name: Upload archives to S3
        if: github.ref == 'refs/heads/trunk'
        run: |
          aws s3 sync target/coverage/ s3://artichoke-forge-code-coverage-us-west-2/boba/ --delete --sse AES256 --exclude '*' --include '*.svg' --content-type 'image/svg+xml'
          aws s3 sync target/coverage/ s3://artichoke-forge-code-coverage-us-west-2/boba/ --delete --sse AES256 --exclude '*' --include '*.html' --content-type 'text/html'
          aws s3 sync target/coverage/ s3://artichoke-forge-code-coverage-us-west-2/boba/ --delete --sse AES256 --exclude '*' --include '*.json' --content-type 'application/json'
          aws s3 sync target/coverage/ s3://artichoke-forge-code-coverage-us-west-2/boba/ --delete --sse AES256 --include '*' --exclude '*.svg' --exclude '*.html' --exclude '*.json'

      - name: Check missed lines
        run: |
          curl -s https://codecov.artichokeruby.org/boba/coverage.json | python -c '\
          import sys, json; \
          \
          trunk_coverage = json.loads(sys.stdin.read()); \
          print("On trunk: "); \
          print("coveragePercent =", trunk_coverage["coveragePercent"]); \
          print("linesCovered =", trunk_coverage["linesCovered"]); \
          print("linesMissed =", trunk_coverage["linesMissed"]); \
          print("linesTotal =", trunk_coverage["linesTotal"]); \
          print(""); \
          \
          branch_coverage = json.load(open("target/coverage/coverage.json"))
          print("On PR branch: "); \
          print("coveragePercent =", branch_coverage["coveragePercent"]); \
          print("linesCovered =", branch_coverage["linesCovered"]); \
          print("linesMissed =", branch_coverage["linesMissed"]); \
          print("linesTotal =", branch_coverage["linesTotal"]); \
          print(""); \
          \
          is_ok = branch_coverage["linesMissed"] <= trunk_coverage["linesMissed"]; \
          exit(0) if is_ok else exit(1) \
          '
```

.github/workflows/code-coverage.yaml

@@ -21,13 +21,8 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
-          profile: minimal
-          override: true
-          components: llvm-tools-preview
+      - name: Install nightly Rust toolchain
+        uses: artichoke/setup-rust/code-coverage@v1
 
       - name: Setup grcov
         run: |