Update translations (Weblate)

Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Weblate <noreply@weblate.org>
Co-authored-by: cketti <cketti@thunderbird.net>
Translate-URL: https://hosted.weblate.org/projects/tb-android/account-common/de/
Translate-URL: https://hosted.weblate.org/projects/tb-android/app-strings/
Translation: K-9 Mail/Thunderbird/account-common
Translation: K-9 Mail/Thunderbird/app-strings