ci: pin remaining GitHub Actions to commit SHAs (P21.1c) (#100)

.github/workflows/scorecard.yml

@@ -24,12 +24,12 @@ jobs:
       id-token: write # OIDC token to publish results to the OpenSSF API
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           persist-credentials: false
 
       - name: Run Scorecard analysis
-        uses: ossf/scorecard-action@v2.4.3
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
         with:
           results_file: results.sarif
           results_format: sarif
@@ -37,13 +37,13 @@ jobs:
           publish_results: true
 
       - name: Upload SARIF artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: SARIF file
           path: results.sarif
           retention-days: 5
 
       - name: Upload SARIF to code-scanning
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@03e4368ac7daa2bd82b3e85262f3bf87ee112f57 # v3.36.0
         with:
           sarif_file: results.sarif