Fix failing super linter run on push

`DEFAULT_BRANCH` set to  `${{ github.base_ref || github.ref_name }} `
so it uses the base branch name for PRs and the branch itself (main/dev) for the rest

.github/workflows/pylint.yml

@@ -50,7 +50,7 @@ jobs:
           VALIDATE_ALL_CODEBASE: false
           # Compare against the base branch
           # This is only accessible on PR
-          DEFAULT_BRANCH: ${{ github.base_ref }}
+          DEFAULT_BRANCH: ${{ github.base_ref || github.ref_name }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           # Run only pylint
           VALIDATE_PYTHON: true