Bump docker/login-action from 2.0.0 to 2.1.0

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
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/docker-3.1dev.yml

@@ -41,7 +41,7 @@ jobs:
 
       - name: GitHub login
         if: ${{ github.event_name != 'pull_request' }}
-        uses: docker/login-action@v2.0.0
+        uses: docker/login-action@v2.1.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}