fix: skip tests in prod CI to avoid DB dependency

Author: unam98

.github/workflows/prod-ci.yml

@@ -40,5 +40,5 @@ jobs:
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
 
-      - name: Build with Gradle # 실제 application build
-        run: ./gradlew build
+      - name: Build with Gradle
+        run: ./gradlew build -x test