Merge pull request #142 from ImperialCollegeLondon/dependabot/github_actions/docker/login-action-3

Bump docker/login-action from 2 to 3

Author: github-actions[bot]

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
       needs: test
       steps:
         - name: Login to GitHub Container Registry
-          uses: docker/login-action@v2
+          uses: docker/login-action@v3
           with:
             registry: ghcr.io
             username: ${{ github.actor }}