fix(ci): added build script to ci release workflow

Author: alvarosabu

.github/workflows/release.yml

@@ -16,6 +16,8 @@ jobs:
           node-version: 12
       - name: Install dependencies
         run: npm ci
+      - name: Build Library
+        run: npm run build
       - name: Run tests
         run: npm run test
       - name: Release