Bump react-i18next from 14.1.3 to 15.0.0 in /webui

Bumps [react-i18next](https://github.com/i18next/react-i18next) from 14.1.3 to 15.0.0.
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/react-i18next/compare/v14.1.3...v15.0.0)

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

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

webui/package.json

@@ -20,7 +20,7 @@
     "i18next-http-backend": "^2.5.2",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
-    "react-i18next": "^14.1.3",
+    "react-i18next": "^15.0.0",
     "react-router-dom": "^6.25.1"
   },
   "devDependencies": {