Use secrets.BOT_TOKEN in lgtm-reset.yml.

Signed-off-by: Revital Sur <eres@il.ibm.com>

Author: revit13

.github/workflows/lgtm-reset.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - name: Invalidate LGTM
         env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_TOKEN: ${{ secrets.BOT_TOKEN }}
           PR_NUMBER: ${{ github.event.pull_request.number }}
           REPO: ${{ github.repository }}
         run: |