build(deps): bump react-i18next from 15.2.0 to 15.4.0

Bumps [react-i18next](https://github.com/i18next/react-i18next) from 15.2.0 to 15.4.0.
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](i18next/react-i18next@v15.2.0...v15.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>