[Feat] gradle.yml 수정

.github/workflows/gradle.yml

@@ -34,7 +34,7 @@ jobs:
         run: |       
           cd ./src/main/resources
           touch ./application.yml
-          echo "${{ secrets.APPLICATION_YML }}" > ./application.yml
+          echo "${{ secrets.APPLICATION_YML }}" | base64 --decode > src/main/resources/application.yml
         shell: bash
 
 #      ## gradle build