Ultralytics Code Refactor https://ultralytics.com/actions (#13361)

Refactor code for speed and clarity

.github/workflows/cla.yml

@@ -30,7 +30,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           # Must be repository secret PAT
-          PERSONAL_ACCESS_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+          PERSONAL_ACCESS_TOKEN: ${{ secrets._GITHUB_TOKEN }}
         with:
           path-to-signatures: "signatures/version1/cla.json"
           path-to-document: "https://docs.ultralytics.com/help/CLA" # CLA document