fix: Add chmod step for gradlew

Author: 0ffz

.github/workflows/gradle-ci.yml

@@ -27,5 +27,9 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3
 
+      - name: Grant execute permission for gradlew
+        shell: bash
+        run: chmod +x gradlew
+
       - name: Build
         run: ./gradlew build