fix: Update MySQL timezone to Asia/Seoul in datasource URL

src/main/resources/application.properties

@@ -13,7 +13,7 @@ spring.jpa.properties.hibernate.format_sql=true
 spring.jpa.show-sql=true
 
 # db
-spring.datasource.url=jdbc:mysql://3.34.144.148:3306/devcard_db?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC&characterEncoding=UTF-8
+spring.datasource.url=jdbc:mysql://localhost:3306/devcard_db?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=Asia/Seoul&characterEncoding=UTF-8
 spring.datasource.username=${DB_USERNAME}
 spring.datasource.password=${DB_PASSWORD}
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver