BAU: Bump i18next from 26.1.0 to 26.2.0

Bumps [i18next](https://github.com/i18next/i18next) from 26.1.0 to 26.2.0.
- [Release notes](https://github.com/i18next/i18next/releases)
- [Changelog](https://github.com/i18next/i18next/blob/master/CHANGELOG.md)
- [Commits](i18next/i18next@v26.1.0...v26.2.0)

---
updated-dependencies:
- dependency-name: i18next
  dependency-version: 26.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -94,7 +94,7 @@
     "express": "5.2.1",
     "express-session": "1.19.0",
     "govuk-frontend": "5.14.0",
-    "i18next": "26.1.0",
+    "i18next": "26.2.0",
     "i18next-fs-backend": "2.6.4",
     "i18next-http-middleware": "3.9.3",
     "nunjucks": "3.2.4",