Renovate changelog workflow use SOLRBOT_GITHUB_TOKEN (#3874)

Author: janhoy

.github/workflows/renovate-changelog.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.SOLRBOT_GITHUB_TOKEN }}
 
       - name: Set up Python
         uses: actions/setup-python@v5