Remove vault dependency from workflows

Author: rtBot

.github/workflows/phpcs_on_pull_request.yml

@@ -12,7 +12,6 @@ jobs:
       uses: rtCamp/action-phpcs-code-review@master
       env:
         SKIP_FOLDERS: "tests,.github"
-        VAULT_ADDR: ${{ secrets.VAULT_ADDR }}
-        VAULT_TOKEN: ${{ secrets.VAULT_TOKEN }}
+        GH_BOT_TOKEN: ${{ secrets.RTBOT_TOKEN }}
       with:
         args: WordPress,WordPress-Core,WordPress-Docs