🌐(frontend) sort extrated locales to help prevent conflicts

when adding keys by hand, we didn't really know where to add them so
that the i18n:extract command would not move them afterwards. Feels like
this will help.
I guess a CI thing checking if the locales file dont change after a push
would be helpful

src/frontend/i18next-parser.config.json

@@ -3,5 +3,6 @@
   "input": ["src/**/*.{ts,tsx}", "!src/styled-system/**/*", "!src/**/*.d.ts"],
   "output": "src/locales/$LOCALE/$NAMESPACE.json",
   "createOldCatalogs": false,
-  "locales": ["en", "fr", "de"]
+  "locales": ["en", "fr", "de"],
+  "sort": true
 }