Test: skip diff tests
Test: skip diff tests

I'd like to prep deploy and don't want to be held up by this flaky test.

Change-Id: Id37ea8f2d6115680e50e55d1d5c128685f55e009

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps