#660 push updated citation to main branch

.github/workflows/publish.yml

@@ -137,7 +137,7 @@ jobs:
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git add CITATION.cff
           git commit -m "Update citation.cff"
-          git push
+          git push origin HEAD:main
 
   verify:
     needs: docker