Updated mediawiki/extensions
Project: mediawiki/extensions/Scribunto  bf39827980199f08f09de88f2a941bf6b06c160d

mw.ustring functions should accept numbers where string functions do

Lua's string functions tend to auto-convert numbers to strings. We
should do the same in mw.ustring.

Bug: 67201
Change-Id: Icd3c5e93bac19dafd78d737ec9b315daba9f1729