Update de_DE app translation for 3.11.0

[ann0see]

Hi @rolamos, We are getting ready for the 3.11.0 release. No further changes to translatable strings are currently planned for this release.

We would be happy if you updated the Jamulus software translations for de_DE by 2024-08-21.

Please either update the translations on Hosted Weblate or use Git:

• Update your fork from jamulussoftware/jamulus main and create a working branch
• Update translations using Qt Linguist in your fork,
• Commit and push your changes and reference this Issue,
• Open a Pull Request before 2024-08-21

Suggested commit and PR message:

Update de_DE app translation for 3.11.0

Fixes #3326

Further documentation can be found in TRANSLATING.md.

Thanks for contributing to Jamulus!

Weblate progress

[ann0see]

Mainly would like to have a review here.