Update release.yml

Author: StiftungAusNachlass

.github/workflows/release.yml

@@ -14,6 +14,9 @@ jobs:
         with:
           node-version: '6'
 
+      - name: Check available CoffeeScript versions
+        run: npm show coffeescript versions
+
       - name: Install CoffeeScript 1.12.8
         run: npm install -g coffeescript@1.12.8