Update file application-ci.yml

backend/src/main/resources/application-ci.yml

-spring:
-  datasource:
-    url: jdbc:postgresql://postgres:5432/tunesphere_db
-    username: username 
-    password: password
-    driver-class-name: org.postgresql.Driver
-
-  jpa:
-    hibernate:
-      ddl-auto: update
-    show-sql: false
-    properties:
-      hibernate:
-        format_sql: true
-    database: postgresql
-    database-platform: org.hibernate.dialect.PostgreSQLDialect
-
-  server:
-    port: 8088
-
-  application:
-    security:
-      jwt:
-        secret: a541e643211a6fd02d1d96b3efd603617eb863887cb58342faa7b395b2732d24
-        expiration: 86400000
-    mailing:
-      frontend:
-        activation-url: http://localhost:4200/activate-account
-
-  app:
-    music:
-      upload-dir: uploads/musics