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

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -28,7 +28,7 @@ jobs:
       id-token: write
     container: ghcr.io/miracum/ig-build-tools:v2.1.6@sha256:26bc1eaf0a259e8c16d0eeeb8622c7aecaa45d41e39f158696f9aec90b142596
     steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
       - name: Setup Pages
         uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
       - name: build ig