Bump docker/login-action from 1.14.1 to 2.1.0

Bumps [docker/login-action](https://github.com/docker/login-action) from 1.14.1 to 2.1.0.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](docker/login-action@dd4fa06...f4ef78c)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/docker.yml

@@ -25,7 +25,7 @@ jobs:
       # https://github.com/docker/login-action
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request' && !startsWith(github.ref, 'refs/pull') && github.actor != 'dependabot[bot]'
-        uses: docker/login-action@49ed152c8eca782a232dede0303416e8f356c37b
+        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ secrets.DOCKERHUB_USERNAME }}