CICD: Update checkout action to v4

Author: stephane-caron

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
   Awesome_Lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - run: npx awesome-lint