Updated mediawiki/extensions
Project: mediawiki/extensions/VipsScaler  6308f0d499f302511a944696b5e0aaa6a20223c7

Have Special:VipsTest recognize things with File: prefix

Note, I don't have vips set up locally, so didn't actually
test, but its a simple one line change, and definitely
should work.

Bug: 51149
Change-Id: Icf2fafe3bb2d9fe7af51dbc46d5ea86d68c12e5e