Updated mediawiki/skins
Project: mediawiki/skins/chameleon  4deb8ca565988afedbcb42d786ddb3df0ebb01af

Update .travis.yml

Tests pass on the local fork [0]

[0] https://travis-ci.org/mwjames/mediawiki-skins-chameleon/jobs/22686145

Change-Id: Id5fc9ca345be897ce28c031138168c620d5b2f7e