build(deps): bump docker/build-push-action from 6.7.0 to 6.8.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@5cd11c3...32945a3)

---
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>

.github/workflows/docker.yml

@@ -49,7 +49,7 @@ jobs:
                 password: ${{ secrets.GITHUB_TOKEN }}
             -
               name: Build
-              uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6.7.0
+              uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6.8.0
               with:
                 file: docker/Dockerfile.release
                 build-args: |
@@ -65,7 +65,7 @@ jobs:
                 docker run -v `pwd`:`pwd` -w `pwd` --rm test_${{ inputs.name }} pytest
             -
               name: Build and push
-              uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6.7.0
+              uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6.8.0
               with:
                 file: docker/Dockerfile.release
                 build-args: |