Change: Update owncloud Design System to v6.0.1

- Lots of updates regarding accessibility topics, an updated color palette and custom CSS properties to allow for (runtime) theming.
- ODS started to use peerDependencies now, we adopted this and added the required packages

https://github.com/owncloud/web/pull/4940
https://github.com/owncloud/web/pull/4925
https://github.com/owncloud/web/pull/4862
https://github.com/owncloud/web/pull/4983
https://github.com/owncloud/web/issues/4331
