chore: unify version (#1123)

packages/i18n/src/index.ts

@@ -4,6 +4,13 @@ import { initReactI18next, Trans, useTranslation } from 'react-i18next';
 import { LOCALES } from './resources';
 import type en_US from './resources/en.json';
 
+declare module 'i18next' {
+  // Refs: https://www.i18next.com/overview/typescript#argument-of-type-defaulttfuncreturn-is-not-assignable-to-parameter-of-type-xyz
+  interface CustomTypeOptions {
+    returnNull: false;
+  }
+}
+
 // const localStorage = {
 //   getItem() {
 //     return undefined;