Enhancement: Update ODS to v13.1.0-rc.2

We updated the ownCloud Design System to version 13.1.0-rc.2. Please refer to the full changelog in the ODS release (linked) for more details. Summary:

- Enhancement - Replace deprecated String.prototype.substr(): https://github.com/owncloud/owncloud-design-system/pull/2059
- Enhancement - Redesign OcGhostElement: https://github.com/owncloud/owncloud-design-system/pull/2049
- Enhancement - Export package members: https://github.com/owncloud/owncloud-design-system/pull/2048
- Enhancement - Make OcResource inline-flex: https://github.com/owncloud/owncloud-design-system/pull/2041
- Bugfix - Disabled textarea color contrast in darkmode: https://github.com/owncloud/owncloud-design-system/pull/2055
- Bugfix - OcTextInput: Fix event handlers in loops: https://github.com/owncloud/owncloud-design-system/pull/2054

https://github.com/owncloud/web/pull/6701
https://github.com/owncloud/web/pull/6708
https://github.com/owncloud/owncloud-design-system/releases/tag/v13.1.0-rc.2
