Use github.event.release.tag_name instead of github.ref (#248)

Author: ludeeus

.github/workflows/release.yml

@@ -32,9 +32,7 @@ jobs:
         run:  make install-poetry
 
       - name: 🔢 Set version number
-        run: |
-          export version=${{ github.ref }}
-          poetry version "${version##*/}"
+        run: poetry version "${{ github.event.release.tag_name }}"
 
       - name: 🛠 Build
         run: poetry build --no-interaction