build(deps): bump the i18next group in /frontend with 2 updates

Bumps the i18next group in /frontend with 2 updates: [i18next](https://github.com/i18next/i18next) and [react-i18next](https://github.com/i18next/react-i18next).


Updates `i18next` from 25.1.2 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@v25.1.2...v25.2.1)

Updates `react-i18next` from 15.5.1 to 15.5.2
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](i18next/react-i18next@v15.5.1...v15.5.2)

---
updated-dependencies:
- dependency-name: i18next
  dependency-version: 25.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: i18next
- dependency-name: react-i18next
  dependency-version: 15.5.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: i18next
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -30,10 +30,10 @@
     "@zxcvbn-ts/language-common": "^3.0.4",
     "classnames": "^2.5.1",
     "date-fns": "^4.1.0",
-    "i18next": "^25.1.2",
+    "i18next": "^25.2.1",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
-    "react-i18next": "^15.5.1",
+    "react-i18next": "^15.5.2",
     "swagger-ui-dist": "^5.22.0",
     "valibot": "^1.0.0",
     "vaul": "^1.1.2"