Update pr-automation.yml

Author: cx-pedro-lopes

.github/workflows/pr-automation.yml

@@ -19,4 +19,4 @@ jobs:
           GH_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN  }}
           PRNUM: ${{ github.event.pull_request.number }}
           PRAUTHOR: ${{ github.event.pull_request.user.login }}
-        run: gh pr edit $PRNUM --add-reviewer CheckmarxDev/AST-Plugins
+        run: gh pr edit $PRNUM