CI: Enable cache for tests

Author: freya022

.github/workflows/test.yml

@@ -54,7 +54,7 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
         with:
-          cache-disabled: true
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
 
       - name: Download Artifacts
         uses: actions/download-artifact@v5