Bump docker/build-push-action from 5.1.0 to 6.8.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5.1.0 to 6.8.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@4a13e50...32945a3)

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

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

.github/workflows/docker.yml

@@ -58,7 +58,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push
-        uses: docker/build-push-action@4a13e500e55cf31b7a5d59a38ab2040ab0f42f56 # v5.1.0
+        uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6.8.0
         with:
           platforms: linux/amd64
           push: true