Bump docker/build-push-action from 6.10.0 to 6.15.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.10.0 to 6.15.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.10.0...v6.15.0)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -83,7 +83,7 @@ jobs:
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@v6.10.0
+        uses: docker/build-push-action@v6.15.0
         with:
           cache-from: type=gha
           cache-to: type=gha,mode=max