fix: changes 'GITHUB_TOKEN' to 'GH_TOKEN'. (#36)

Author: willum070

.github/workflows/dependabot.yml

@@ -24,7 +24,7 @@ jobs:
     if: ${{ github.actor == 'dependabot[bot]' }}
     env:
       PR_URL: ${{ github.event.pull_request.html_url }}
-      GITHUB_TOKEN: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }}
+      GH_TOKEN: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }}
     steps:
       - name: approve
         run: gh pr review --approve "$PR_URL"