intentionally use v3 to update itself

Author: jakecoffman

.github/workflows/example.yml

@@ -46,7 +46,7 @@ jobs:
     needs: run-dependabot
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v3
 
       - name: Download result
         uses: actions/download-artifact@v4