Upgrade linter to v4

Author: web-flow

.github/workflows/linter.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Lint Code Base
-        uses: github/super-linter@v3
+        uses: github/super-linter@v4
         env:
           DEFAULT_BRANCH: 'main'
           VALIDATE_ALL_CODEBASE: false