fix: increase DB max pool size

libs/common/src/database/database.module.ts

@@ -125,7 +125,7 @@ import { VisitorPasswordEntity } from '../modules/visitor-password/entities';
           logger: typeOrmLogger,
           extra: {
             charset: 'utf8mb4',
-            max: 50, // set pool max size
+            max: 100, // set pool max size
             idleTimeoutMillis: 5000, // close idle clients after 5 second
             connectionTimeoutMillis: 12_000, // return an error after 11 second if connection could not be established
             maxUses: 7500, // close (and replace) a connection after it has been used 7500 times (see below for discussion)