Bump docker/build-push-action from 2.6.1 to 2.9.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.6.1 to 2.9.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.6.1...v2.9.0)

---
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>

.github/workflows/python-publish.yml

@@ -53,7 +53,7 @@ jobs:
         username: ${{ secrets.DOCKER_HUB_USERNAME }}
         password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
     - name: Build and Push to Docker Hub
-      uses: docker/build-push-action@v2.6.1
+      uses: docker/build-push-action@v2.9.0
       with:
         context: .
         push: true