Update cla bot token

Author: RChloe

.github/workflows/cla.yml

@@ -39,7 +39,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           # the below token should have repo scope and must be manually added by you in the repository's secret
-          PERSONAL_ACCESS_TOKEN : ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+          PERSONAL_ACCESS_TOKEN : ${{ secrets.CLA_BOT_GH_ACCESS_TOKEN }}
         with:
           path-to-signatures: 'signatures/version1/cla.json'
           path-to-document: 'https://github.com/cla-assistant/github-action/blob/master/SAPCLA.md' # e.g. a CLA or a DCO document