ci: add missing env var for publishing

Author: tronghn

.github/workflows/publish-release.yml

@@ -32,6 +32,7 @@ jobs:
           ORG_GRADLE_PROJECT_signingInMemoryKeyId: ${{ secrets.GPG_KEY_NAME }}
           ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.GPG_PASSPHRASE }}
           ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.GPG_KEYS }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         # The GITHUB_REF tag comes in the format 'refs/tags/xxx'.
         # So if we split on '/' and take the 3rd value, we can get the release name.
         run: |