Bump docker/build-push-action from 5 to 6 (#41)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

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

.github/workflows/docker.yml

@@ -36,7 +36,7 @@ jobs:
             type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'master') }}
             type=raw,value={{branch}},enable=${{ github.ref != format('refs/heads/{0}', 'master') }}
             type=ref,event=tag
-      - uses: docker/build-push-action@v5
+      - uses: docker/build-push-action@v6
         with:
           platforms: ${{ env.PLATFORMS }}
           push: true