Use workflow token in docgen scheduler

Author: alexslavr

.github/workflows/docgen-scheduler.yml

@@ -2,7 +2,7 @@ name: DocGen Scheduler
 
 on:
   workflow_dispatch:
-  schedule: 
+  schedule:
     - cron: '0 1 * * 1-5'
 
 jobs:
@@ -33,7 +33,7 @@ jobs:
                 curl \
                   -X POST \
                   -H "Accept: application/vnd.github.v3+json" \
-                  -H "Authorization: Bearer ${{ secrets.DXROBOT_PAT }}" \
+                  -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
                   https://api.github.com/repos/${{ github.repository }}/actions/workflows/$WORKFLOW_ID/dispatches \
                   -d '{"ref":"'$REF'"}'
               fi