Fix release workflow (#6)

Merged without review.

Author: ryannedolan

.github/workflows/release.yml

@@ -18,3 +18,5 @@ jobs:
         uses: gradle/gradle-build-action@749f47bda3e44aa060e82d7b3ef7e40d953bd629
         with:
           arguments: publish
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}