build(action): 修复 gradlew 无权限的问题.

由于 gradlew 并未自动获得执行权限, 所以 Action 执行 gradlew 时会失败, 已在执行前设置执行权限, 希望管用.

.github/workflows/build-and-test.yml

@@ -25,6 +25,8 @@ jobs:
         java-version: '11'
         distribution: 'adopt-hotspot'
         cache: 'gradle'
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
     - name: Build and test
       uses: gradle/gradle-build-action@67421db6bd0bf253fb4bd25b31ebb98943c375e1
       with: