Fix case of gh_token in the deploy script.

Author: nedtwigg

.github/workflows/deploy.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     name: deploy
     env:
-      gh_token: ${{ secrets.GITHUB_TOKEN }}
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       ORG_GRADLE_PROJECT_nexus_user: ${{ secrets.NEXUS_USER }}
       ORG_GRADLE_PROJECT_nexus_pass64: ${{ secrets.NEXUS_PASS64 }}
       ORG_GRADLE_PROJECT_gpg_passphrase: ${{ secrets.GPG_PASSPHRASE }}