fix: test CI 코드 수정

Author: HYEONSIKOH

.github/workflows/ci-test.yml

@@ -23,6 +23,11 @@ jobs:
           distribution: 'temurin'
           java-version: '17'
 
+      - name: Initialize Gradle (Gradle 초기화)
+        run: |
+          ./default/gradle init
+          ./chat/gradle init
+
       - name: Create application.properties from git secret (application.properties 파일 생성)
         run: |
           mkdir -p default/src/main/resources