Updated mediawiki/extensions
Project: mediawiki/extensions/UniversalLanguageSelector  17ce0c7e1a089b72f809c42e4640d2759ebfcd2d

bump mediawiki_selenium to 0.2.3

mediawiki_selenium 0.2.3 let us specify the destination of screenshots
via SCREENSHOT_FAILURES_PATH env variable.

Change-Id: I199ce712f7e062bac613c66ac5fdcd5a83d3422f