fix(ci): 指定 pnpm cache 的 lock 文件路径

Made-with: Cursor

Author: safe1ine

.github/workflows/build.yml

@@ -29,6 +29,7 @@ jobs:
         with:
           node-version: ${{ env.NODE_VERSION }}
           cache: "pnpm"
+          cache-dependency-path: frontend/pnpm-lock.yaml
 
       - name: Install dependencies
         working-directory: frontend