chore: bump i18next from 25.8.13 to 26.3.1

Bumps [i18next](https://github.com/i18next/i18next) from 25.8.13 to 26.3.1.
- [Release notes](https://github.com/i18next/i18next/releases)
- [Changelog](https://github.com/i18next/i18next/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/i18next/compare/v25.8.13...v26.3.1)

---
updated-dependencies:
- dependency-name: i18next
  dependency-version: 26.3.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -76,7 +76,7 @@
     "express": "^5.0.1",
     "http-proxy": "^1.18.1",
     "httpolyglot": "^0.1.2",
-    "i18next": "^25.8.3",
+    "i18next": "^26.3.1",
     "js-yaml": "^4.1.0",
     "limiter": "^2.1.0",
     "pem": "^1.14.8",