ci: 👷 빌드 스텝 추가

Author: RWB0104

.github/workflows/cache.yml

@@ -44,4 +44,7 @@ jobs:
 
       - name: Dependencies Install
         if: steps.cache.outputs.cache-hit != 'true'
-        run: pnpm install
+        run: pnpm install
+
+      - name: build script
+        run: pnpm rollup -c