fix: please set 'javax.persistence.jdbc.url', 'hibernate.connection.u…

…rl', or 'hibernate.dialect' 문제 해결 시도

src/main/resources/application.yml

@@ -62,6 +62,7 @@ spring:
       hibernate:
         format_sql: true
         show_sql: true
+        dialect: org.hibernate.dialect.MySQLDialect
   servlet:
     multipart:
       max-file-size: 100MB