Bump i18next from 24.2.1 to 25.2.1 in /client

Bumps [i18next](https://github.com/i18next/i18next) from 24.2.1 to 25.2.1.
- [Release notes](https://github.com/i18next/i18next/releases)
- [Changelog](https://github.com/i18next/i18next/blob/master/CHANGELOG.md)
- [Commits](i18next/i18next@v24.2.1...v25.2.1)

---
updated-dependencies:
- dependency-name: i18next
  dependency-version: 25.2.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

client/package-lock.json

@@ -19,7 +19,7 @@
         "@fontsource/roboto-condensed": "^5.2.5",
         "base-64": "^1.0.0",
         "i18n": "^0.15.1",
-        "i18next": "^24.1.2",
+        "i18next": "^25.2.1",
         "i18next-browser-languagedetector": "^8.0.0",
         "i18next-http-backend": "^2.6.2",
         "jwt-decode": "^4.0.0",