Fix release version detection

Author: mnapoli

.github/workflows/release.yml

@@ -24,9 +24,8 @@ jobs:
               with:
                   path: ~/.npm
                   key: ${{ runner.os }}-node-${{ hashFiles('**/package.json') }}
-            # Store the name of the release
-            # See https://stackoverflow.com/questions/58177786/get-the-current-pushed-tag-in-github-actions
-            - run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+            - run: echo "RELEASE_VERSION=${{ github.event.release.tag_name }}" >> $GITHUB_ENV
+            - run: test -n "$RELEASE_VERSION"
             - run: npm i
             - run: npm version $RELEASE_VERSION --no-git-tag-version
             - run: npm publish --access public