Codex auto-update 5 (wip)

Author: ishulgin

.github/workflows/codex-update.yml

@@ -64,8 +64,15 @@ jobs:
           git commit -m "Update codex to ${{ needs.check.outputs.version }}"
           git push origin "${{ needs.check.outputs.branch }}"
 
+      - name: Generate GitHub App token
+        id: app-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ vars.GH_APP_ID }}
+          private-key: ${{ secrets.GH_APP_TOKEN }}
+
       - name: Create PR
         env:
-          GH_TOKEN: ${{ secrets.GH_CREATE_PR_TOKEN }}
+          GH_TOKEN: ${{ steps.app-token.outputs.token }}
         run: |
           gh pr create --title "Update codex to ${{ needs.check.outputs.version }}" --body "Automated codex update" --label "codex-update"