fix: Update dependabot.yml (#58)

1. Changes 'github.token' to 'secrets.GITHUB_TOKEN'.
2. Removes debugging lines.

Author: willum070

.github/workflows/dependabot.yml

@@ -25,14 +25,10 @@ jobs:
     if: ${{ github.actor == 'dependabot[bot]' }}
     env:
       PR_URL: ${{ github.event.pull_request.html_url }}
-      GH_TOKEN: ${{ github.token }}
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - name: Debug Actor
-        run: echo "Actor ${{ github.actor }}"
-      - name: Debug Event
-        run: echo "Event ${{ github.event_name }}"
       - name: approve
         run: gh pr review --approve "$PR_URL"
       - name: merge
         run: gh pr merge --auto --squash --delete-branch "$PR_URL"
-        
+