Updated mediawiki/extensions
Project: mediawiki/extensions/ContentTranslation  8c68bc9c1ebd5c80eeda4580af37bbece60eb772

Adjust tools column z-index to make the sticky header transition less jarring

The z-index is adjusted to make sure the publish button
does not cover the tools column when moving when the header becomes
fixed on top (which happens when you scroll down).

Change-Id: I32bea280f0110acea6713938b0dce09dc56bacac