[2.3.1] Info Banner refactor

This release introduces the refactored info banner, which is now also based on shadcn-vue components, marking another milestone in the replacement of the deprecated Preline based components. Some inconsistencies with the Aruna CI have also been fixed.

What's Changed

• Refactor info banner by @das-Abroxas in #108
• Apply CI to omitted parts of imprint page by @das-Abroxas in #110

Full Changelog: v2.3.0...v2.3.1