Bump docker/login-action from 2 to 3 (#52)

Bumps [docker/login-action](https://github.com/docker/login-action) from 2 to 3.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](docker/login-action@v2...v3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/gradle.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: login to docker hub
-      uses: docker/login-action@v2
+      uses: docker/login-action@v3
       with:
         username: "hennr"
         password: ${{ secrets.DOCKER_HUB_TOKEN }}