CLAP-107 Bug : CI test yml파일 key 중복 수정

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- 관련: #60

Author: hyoseong-Choi

.github/workflows/dev-ci.yml

@@ -21,7 +21,8 @@ jobs:
         with:
           java-version: '17'
           distribution: 'temurin' # https://github.com/actions/setup-java
-      - run: echo "${{ secrets.S3_PROPERTIES }}" >> ./src/test/resources/application.yml
+      - run: touch ./src/test/resources/application.yml
+      - run: echo "${{ secrets.S3_PROPERTIES }}" > ./src/test/resources/application.yml
 
       # gradle caching - 빌드 시간 향상
       - name: Gradle Caching