chore: bump react-i18next from 14.1.2 to 15.0.0 in /frontend/web (#256)

Bumps [react-i18next](https://github.com/i18next/react-i18next) from 14.1.2 to 15.0.0.
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/react-i18next/compare/v14.1.2...v15.0.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/web/package.json

@@ -24,7 +24,7 @@
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-hot-toast": "^2.4.1",
-    "react-i18next": "^14.1.0",
+    "react-i18next": "^15.0.0",
     "react-router-dom": "^6.24.1",
     "react-use": "^17.5.0",
     "tailwindcss": "^3.4.3",