Bump docker/login-action from 2.0.0 to 2.1.0 (#134)

Bumps [docker/login-action](https://github.com/docker/login-action) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](https://github.com/docker/login-action/compare/v2.0.0...v2.1.0)

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

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.github/workflows/python-publish.yml

@@ -48,7 +48,7 @@ jobs:
         python3 -m build
         twine upload dist/*
     - name: Log in to Docker Hub
-      uses: docker/login-action@v2.0.0
+      uses: docker/login-action@v2.1.0
       with:
         username: ${{ secrets.DOCKER_HUB_USERNAME }}
         password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}