version bump checkout to v4

Author: MariusStorhaug

.github/workflows/Linter.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Lint Code Base
         # uses: github/super-linter:latest