Update application.properties

Author: KangDaegyeom

src/main/resources/application.properties

@@ -49,7 +49,7 @@ spring.datasource.url=jdbc:postgresql://aws-0-ap-northeast-2.pooler.supabase.com
 spring.datasource.username=postgres.tqfrfajjuuqiwltoapoz
 spring.datasource.password=${POSTGRESQL_SECRET}
 spring.datasource.driver-class-name=org.postgresql.Driver
-spring.datasource.hikari.maximum-pool-size=20
+spring.datasource.hikari.maximum-pool-size=10
 
 # smtp
 spring.mail.host=smtp.gmail.com