Update docker/build-push-action action to v7

Author: renovate[bot]

.github/workflows/build.yml

@@ -99,7 +99,7 @@ jobs:
       # Build and push Docker image with Buildx (don't push on PR)
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@14487ce63c7a62a4a324b0bfb37086795e31c6c1 # v6.16.0
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
         with:
           context: containers/${{ matrix.container }}
           platforms: linux/amd64

.github/workflows/release.yml

@@ -74,7 +74,7 @@ jobs:
 
       - name: Build and push by digest
         id: build
-        uses: docker/build-push-action@14487ce63c7a62a4a324b0bfb37086795e31c6c1 # v6.16.0
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
         with:
           context: containers/${{ needs.changed-containers.outputs.container_name }}
           platforms: ${{ matrix.platform }}