Update de-DE.ts

[magicmikek]

Description

Improves the German (de-DE) localization to ensure clarity, consistency, and a more natural user experience.
This includes:

Refining terminology (Einloggen → Anmelden, Anmelden→ Registrieren (Signup))

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other: chore(localization)

[vercel]

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[LekoArts]

Hi, thanks for the PR!

I don't think this meaningfully improves the current default localizations and it should already work good enough for most people. I think these words can be used interchangeably and it comes down to personal preference, especially since this terminology is "eingedeutscht". For our default localization we chose to stuck with "einloggen/ausloggen/anmelden". We use this in more places than the ones you updated.

You can overwrite these strings through https://clerk.com/docs/customization/localization#custom-localizations to change it to your desired output though 👍