fix: 在CI中添加gradlew执行权限

Author: Dark2932

.github/workflows/build.yml

@@ -26,6 +26,9 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
 
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
       - name: Build with Gradle
         run: ./gradlew build