Update sync-main.yml

Author: dilanbhalla

.github/workflows/sync-main.yml

@@ -66,12 +66,18 @@ jobs:
           git push origin auto/sync-main-pr
         env:
           GH_TOKEN: ${{ secrets.WORKFLOW_TOKEN }}
-      - name: Create or update PR
+      - name: Create PR if it doesn't exist
+        shell: bash
         run: |
-          if gh pr list --repo microsoft/codeql --head auto/sync-main-pr --base main --json number --jq '.[0].number' > /dev/null; then
-            echo "PR from auto/sync-main-pr to main already exists. Exiting gracefully."
+          pr_number=$(gh pr list --repo microsoft/codeql --head auto/sync-main-pr --base main --json number --jq '.[0].number')
+          if [ -n "$pr_number" ]; then
+            echo "PR from auto/sync-main-pr to main already exists (PR #$pr_number). Exiting gracefully."
           else
-            gh pr create --repo microsoft/codeql --fill -B main -H auto/sync-main-pr --label 'autogenerated' --title 'Sync Main (autogenerated)' --body "This PR syncs the latest changes from \`codeql-cli/latest\` into \`main\`."
+            echo "PR does not exist. Creating one..."
+            gh pr create --repo microsoft/codeql --fill -B main -H auto/sync-main-pr \
+              --label 'autogenerated' \
+              --title 'Sync Main (autogenerated)' \
+              --body "This PR syncs the latest changes from \`codeql-cli/latest\` into \`main\`."
           fi
         env:
-          GH_TOKEN: ${{ secrets.WORKFLOW_TOKEN }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}