chore(deps): update actions/checkout action to v4.2.1

Author: renovate[bot]

.github/workflows/docker-pr-build-and-push.yml

@@ -25,7 +25,7 @@ jobs:
         run: echo "PR_NUMBER=$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")" >> $GITHUB_ENV
 
       - name: Checkout
-        uses: actions/checkout@1d96c772d19495a3b5c517cd2bc0cb401ea0529f # v4.1.3
+        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
 
       - name: Build container
         run: |