Bump docker/login-action

Bumps the minor-actions-dependencies group with 1 update in the / directory: [docker/login-action](https://github.com/docker/login-action).


Updates `docker/login-action` from 4.4.0 to 4.6.0
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](https://github.com/docker/login-action/compare/v4.4.0...v4.6.0)

---
updated-dependencies:
- dependency-name: docker/login-action
  dependency-version: 4.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-actions-dependencies
...

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

.github/workflows/update-test-ubuntu-git.yml

@@ -31,7 +31,7 @@ jobs:
       # Use `docker/login-action` to log in to GHCR.io. 
       # Once published, the packages are scoped to the account defined here.
       - name: Log in to the ghcr.io container registry
-        uses: docker/login-action@v4.4.0
+        uses: docker/login-action@v4.6.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}