Feature/update locales (#5391)

* Update locales

* Update translations

* Update changelog

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Thomas Kaul <4159106+dtslvr@users.noreply.github.com>

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Localized the content of the about page
+- Improved the language localization for German (`de`)
 - Upgraded the _Stripe_ dependencies
 - Upgraded `ngx-device-detector` from version `10.0.2` to `10.1.0`
 - Upgraded `ngx-skeleton-loader` from version `11.2.1` to `11.3.0`