Use username for contributors (pypsa-meets-earth#1282)

* Use username for contributors

* Workflow dispatch bypass contributor workflow

Author: davide-f

.github/workflows/main.yml

@@ -7,9 +7,11 @@ jobs:
   contrib-readme-job:
     runs-on: ubuntu-latest
     name: A job to automate contrib in readme
-    if: ${{ github.repository_owner == 'pypsa-meets-earth' && github.ref == 'refs/heads/main'}}
+    if: ${{ github.event_name == 'workflow_dispatch' || (github.repository_owner == 'pypsa-meets-earth' && github.ref == 'refs/heads/main')}}
     steps:
     - name: Contribute List
       uses: akhilmhdh/[email protected]
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        use_username: true