Pin GitHub Actions workflow references

.github/workflows/ci.yml

@@ -11,15 +11,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@02f6c237bd2518259fed6c71566509edfb3f2b74 # v4
         with:
           run_install: false
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6
         with:
           node-version: 22
           cache: "pnpm"

.github/workflows/cla.yml

@@ -15,7 +15,7 @@ jobs:
   cla:
     runs-on: ubuntu-latest
     steps:
-      - uses: contributor-assistant/[email protected]
+      - uses: contributor-assistant/github-action@ca4a40a7d1004f18d9960b404b97e5f30a505a08 # v2.6.1
         if: |
           github.event_name == 'pull_request_target' ||
           github.event.comment.body == 'recheck' ||