i18n(de): Update Settings and SubmitSaveAllSettings Keys

- Replace 'SubmitSaveAllSettings' with 'SaveAccountDetails' in German locale
- Update 'Settings' from 'Account Einstellungen' to 'Mein Konto' in AccountView
- Aligns German translations with updated English UI terminology

Progress towards #3510

Author: ajinkya22-dev

translations/locales/de/translations.json

@@ -306,13 +306,13 @@
     "CurrentPasswordARIA": "aktuelles passwort",
     "NewPassword": "Neues Passwort",
     "NewPasswordARIA": "neues passwort",
-    "SubmitSaveAllSettings": "Alle Einstellungen speichern"
+    "SaveAccountDetails": "Kontodetails speichern"
   },
   "AccountView": {
     "SocialLogin": "Social Login",
     "SocialLoginDescription": "Nutze Deinen GitHub oder Google Account um dich beim p5.js Web Editor anzumelden.",
     "Title": "p5.js Web Editor | Account Einstellungen",
-    "Settings": "Account Einstellungen",
+    "Settings": "Mein Konto",
     "AccountTab": "Account",
     "AccessTokensTab": "Zugangstokens"
   },