ci: use shasum for actions

Author: eltouma

.github/workflows/push_to_registry.yml

@@ -9,20 +9,20 @@ jobs:
     steps:
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4
 
       - name: Install build tools
         run: sudo apt-get update && sudo apt-get install -y build-essential cmake clang
       -
         name: Login to GitHub Container Registry
-        uses: docker/login-action@v2
+        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Build and push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7
         with:
           platforms: linux/amd64
           push: true