Updated mediawiki/extensions
Project: mediawiki/extensions/LiquidThreads  f6b13fc3bac104cdbcc88b1c012dd7ae044f8f68

Use DerivativeRequest instead of FauxRequest

Using a FauxRequest causes issues in recording CheckUser data, as
well as when calling the API internally.

Change-Id: I7d5f42d3c465f262feb180fb60711872d9532c49