chore(ci): pin GitHub Actions to commit SHAs

Replaces moving tag references with full commit SHAs and trailing semver
comments. Defends against tag-repointing supply-chain attacks if a third-
party action maintainer is compromised.

Author: asachs01

.github/workflows/ci.yml

@@ -33,12 +33,12 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
         with:
           fetch-depth: 0
 
       - name: Setup Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e  # v6.4.0
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'npm'
@@ -91,10 +91,9 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
-
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e  # v6.4.0
         with:
           node-version: '20.x'
           cache: 'npm'
@@ -108,7 +107,7 @@ jobs:
           NODE_OPTIONS: --max-old-space-size=4096
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v6
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2  # v6.0.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage/lcov.info

.github/workflows/manual-release.yml

@@ -26,13 +26,13 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4.4.0
         with:
           node-version: "lts/*"
           registry-url: 'https://registry.npmjs.org'

.github/workflows/release.yml

@@ -18,12 +18,12 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
         with:
           fetch-depth: 0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4.4.0
         with:
           node-version: "20.x"
           registry-url: "https://npm.pkg.github.com"
@@ -74,7 +74,7 @@ jobs:
           echo "Release notes extracted"
 
       - name: Create GitHub Release
-        uses: softprops/action-gh-release@v3
+        uses: softprops/action-gh-release@b4309332981a82ec1c5618f44dd2e27cc8bfbfda  # v3.0.0
         with:
           tag_name: ${{ github.ref_name }}
           name: Release ${{ github.ref_name }}