Update to German locale [de]

[container1]

Hello
I tried to translate and support as requested in explanation.
Unfortunately I noticed 4 strings are mentioned but onl3 strings where found.
vdh-settings[de].json

[paulrouget]

Sorry we already got a translation for that language 🙏

I recommend that you try the upcoming version (v9.1 which should be released next week) see if the translation is correct.

If you want to keep track of the current translation status of your language, I recommend following this github repository: https://github.com/aclap-dev/vdhlocales