fix: import 'mongodb-memory-server' properly

Author: vladholubiev

setup.js

@@ -1,10 +1,10 @@
 const fs = require('fs');
 const {resolve, join} = require('path');
-const MongodbMemoryServer = require('mongodb-memory-server');
+const {MongoMemoryServer} = require('mongodb-memory-server');
 const cwd = process.cwd();
 
 const debug = require('debug')('jest-mongodb:setup');
-const mongod = new MongodbMemoryServer.default(getMongodbMemoryOptions());
+const mongod = new MongoMemoryServer(getMongodbMemoryOptions());
 
 const globalConfigPath = join(cwd, 'globalConfig.json');