Try only specifying GRGIT_USER to the token as per grgit docs.

Author: Anuraag Agrawal

.github/workflows/release-build.yml

@@ -40,8 +40,7 @@ jobs:
         env:
           PUBLISH_USERNAME: ${{ secrets.PUBLISH_USERNAME }}
           PUBLISH_PASSWORD: ${{ secrets.PUBLISH_PASSWORD }}
-          GRGIT_USER: ${{ github.actor }}
-          GRGIT_PASS: ${{ secrets.GITHUB_TOKEN }}
+          GRGIT_USER: ${{ secrets.GITHUB_TOKEN }}
           COMMIT_HASH: ${{ github.event.inputs.version }}
           GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
           GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}