Update mysqlclient version in the ReadMe

Author: mdmintz

README.md

@@ -254,7 +254,7 @@ Here are some things you can do to setup a production environment for your testi
 * If you're using the [SeleniumBase MySQL feature](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/mysql_installation.md) to save results from tests running on a server machine, you can install [MySQL Workbench](https://dev.mysql.com/downloads/tools/workbench/) to help you read & write from your DB more easily. You'll also need to install the MySQL Python client. Depending on your system, you may need to install additional requirements for this (such as on Windows). See [Stackoverflow](https://stackoverflow.com/questions/43102442/whats-the-difference-between-mysqldb-mysqlclient-and-mysql-connector-python) for more info.
 
 ```
-pip install mysqlclient==1.3.14
+pip install mysqlclient==1.4.2
 ```
 
 * If you use [Slack](https://slack.com), you can easily have your Jenkins jobs display results there by using the [Jenkins Slack Plugin](https://github.com/jenkinsci/slack-plugin). Another way to send messages from your tests to Slack is by using [Slack's Incoming Webhooks API](https://api.slack.com/incoming-webhooks).