Updated mediawiki/extensions
Project: mediawiki/extensions/DonationInterface  c3b177d4b81381d67be637fccad834621467077a

Test that two GC API requests send different info

They used to send duplicate merchant refs when we used the last
5 digits of the time as a suffix.

Change-Id: I3eeec039d2d9077746372af153b003a2fddde0dd