ci(tools): update docker/build-push-action action to v7 (#55)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/docker.yml

@@ -81,7 +81,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Docker build
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           builder: ${{ steps.buildx.outputs.name }}
           provenance: false