chore: db endpoint 수정

Author: Kyoungwoong

src/main/resources/application-dev.yml

@@ -1,7 +1,7 @@
 spring:
   datasource:
     driver-class-name: com.mysql.cj.jdbc.Driver
-    url: jdbc:mysql://${DB_ENDPOINT}/${DB_NAME}?useSSL=false&serverTimezone=UTC
+    url: jdbc:mysql://${DB_ENDPOINT}:3306/${DB_NAME}?useSSL=false&serverTimezone=UTC
     username: playhive
     password: ${DB_PASSWORD}