fix: use ref name env var for tag name

Author: arnaudforaison

.github/workflows/publish-release.yml

@@ -10,7 +10,7 @@ on:
 
 env:
   NODE_VERSION: 16.x
-  TOOLKIT_VERSION: ${{ GITHUB_REF_NAME }}
+  TOOLKIT_VERSION: $GITHUB_REF_NAME
 
 jobs:
   publish: