Bump docker/build-push-action from 6.11.0 to 6.12.0 (#422)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.11.0 to 6.12.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.11.0...v6.12.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
             ${{ runner.os }}-buildx-
 
       - name: Build image and cache
-        uses: docker/build-push-action@v6.11.0
+        uses: docker/build-push-action@v6.12.0
         with:
           load: true
           target: ${{ env.IMAGE_TARGET }}