chore(deps): bump react-i18next from 11.16.6 to 12.1.1 (#4634)

* chore(deps): bump react-i18next from 11.16.6 to 12.1.1

Bumps [react-i18next](https://github.com/i18next/react-i18next) from 11.16.6 to 12.1.1.
- [Release notes](https://github.com/i18next/react-i18next/releases)
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/react-i18next/compare/v11.16.6...v12.1.1)

---
updated-dependencies:
- dependency-name: react-i18next
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update related deps, TS fixes

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tom Moor <tom.moor@gmail.com>

shared/i18n/index.ts

@@ -102,6 +102,7 @@ export const initI18n = (defaultLanguage = "en_US") => {
       supportedLngs: languages.map(unicodeCLDRtoBCP47),
       // Uncomment when debugging translation framework, otherwise it's noisy
       keySeparator: false,
+      returnNull: false,
     });
   return i18n;
 };