ci: add cache-read-only parameter to Gradle setup step

Enable better control over cache modifications by adding the cache-read-only parameter.

Author: eazyhozy

.github/workflows/continuous-integration.yml

@@ -17,6 +17,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: false
 
       - name: Build (Check, Compile, Test)
         id: build