Made gradlew executible

Author: zaze06

.github/workflows/gradle.yml

@@ -19,5 +19,8 @@ jobs:
           distribution: 'temurin'
           java-version: '21'
 
+      - name: Make gradlew executable
+        run: chmod +x gradlew
+
       - name: Build with Gradle
         run: ./gradlew build --no-daemon