Updated mediawiki/extensions
Project: mediawiki/extensions/DismissableSiteNotice  6596063cf40d643c816c5b9bd1298017e6c44d65

Migrate to JSON i18n

Procedure per https://www.mediawiki.org/wiki/Manual:GenerateJsonI18n.php
with shim.

Change-Id: I0c94a97e6963ddf8f80fff6cb52918daea6ea402