2020-12-15-add-unique-check-for-seo-url-templates.md

title	issue	author	author_email	author_github
Add unique check for seo url templates	NEXT-12453	OliverSkroblin	[email protected]	OliverSkroblin

Core

• Changed \Shopware\Core\Content\Seo\SeoUrlUpdater, to only fetch unique the seo url templates