Update nersc.yml

Author: jeanbez

.github/workflows/nersc.yml

@@ -1,7 +1,7 @@
 name: NERSC
 
 on:
-  pull_request
+  pull_request_target
 
 env:
   PR_NUMBER: ${{ github.event.number }}
@@ -37,4 +37,4 @@ jobs:
           git fetch origin pull/${PR_NUMBER}/head:PR-${PR_SHA}
           git remote add gitlab https://${{ secrets.GITLAB_TOKEN_NAME }}:${{ secrets.GITLAB_TOKEN }}@${{ secrets.GITLAB_URL }}
           git checkout PR-${PR_SHA}
-          git push -f -u gitlab PR-${PR_SHA}
+          git push -f -u gitlab PR-${PR_SHA}