Fix lint issues (#7428)

GitOrigin-RevId: bce6060c597ae9b51a01b849f405c8f7a23b6747

server-ce/hotfix/2.5.2/12_update_token_email.js

@@ -1,6 +1,7 @@
 const Settings = require('settings-sharelatex')
 const mongojs = require('mongojs')
 const db = mongojs(Settings.mongo.url, ['tokens'])
+// eslint-disable-next-line import/no-extraneous-dependencies
 const async = require('async')
 
 exports.migrate = (client, done) => {