chore(ci): don't run update contributors on forked PRs (#4323)

* chore(ci): don't run update contributors on forked PRs

* chore: update contributors field

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

.github/workflows/contributors.yml

@@ -6,14 +6,21 @@ on:
 jobs:
   update-contributors:
     runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == false }}
     steps:
+      - uses: navikt/github-app-token-generator@2d70c12368d1958155af4d283f9f21c9a2a8cb98
+        id: get-token
+        with:
+          private-key: ${{ secrets.TOKENS_PRIVATE_KEY }}
+          app-id: ${{ secrets.TOKENS_APP_ID }}
       - name: Git checkout
         uses: actions/checkout@v2
         with:
           ref: ${{ github.head_ref }}
-      - uses: netlify/update-contributors-action@main
+          token: ${{ steps.get-token.outputs.token }}
+      - uses: netlify/update-contributors-action@v1
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
+          github-token: ${{ steps.get-token.outputs.token }}
       - uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: 'chore: update contributors field'