Bump docker/build-push-action from 4.1.1 to 6.8.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4.1.1 to 6.8.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@2eb1c19...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

@@ -35,7 +35,7 @@ jobs:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@2eb1c1961a95fc15694676618e422e8ba1d63825
+        uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960
         with:
           context: .
           push: true