Log Message:
py-selenium: updated to 3.8.1

Selenium 3.8.1
* Fix bug when creating an Opera driver
* Stop sending sessionId in w3c payload.
* Fix issue with w3c actions releasing on element
* A more descriptive log message is displayed if the port cannot be connected
* Initialize Alert object by calling alert.text
* PhantomJS is now deprecated, please use either Chrome or Firefox in headless mode
* Legacy Firefox driver: ensuring copy of profile dir, its 'extensions' subdir \ 
and 'user.js' file are writable.