Bump docker/build-push-action from 2.5.0 to 2.6.1 (#73)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.5.0 to 2.6.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.5.0...v2.6.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.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@v2.5.0
+      uses: docker/build-push-action@v2.6.1
       with:
         push: true
         tags: qmkfm/qmk_cli:latest