spree 5.1.2 on Ruby Gems

What's Changed

API: fixed Taxon's header_url to always use CDN when generating ima… by @damianlegawiec in #12930
permit params for spotify and discord by @simlegate in #12922
Admin: Fixed rendering and setting properties for product form by @damianlegawiec in #12931
Clean up admin forms to center them for better UX by @damianlegawiec in #12934
Fix datepicker handling by @brozek95 in #12933
Include all Spree controller helpers in DeviseConcern by @damianlegawiec in #12942
fix: Pages can not be edit after theme was published by @simlegate in #12943
Improve admin updater notification by @damianlegawiec in #12932

Full Changelog: v5.1.1...v5.1.2