fix: update token reference in release-please workflow to prioritize RELEASE_PLEASE_TOKEN

Author: JoachimLK

.github/workflows/release-please.yml

@@ -17,6 +17,6 @@ jobs:
     steps:
       - uses: googleapis/release-please-action@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.RELEASE_PLEASE_TOKEN || secrets.GITHUB_TOKEN }}
           config-file: .github/release-please-config.json
           manifest-file: .release-please-manifest.json