chore(deps): bump i18next from 23.14.0 to 23.15.1 in /frontend

Bumps [i18next](https://github.com/i18next/i18next) from 23.14.0 to 23.15.1.
- [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/v23.14.0...v23.15.1)

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

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

frontend/package-lock.json

@@ -11,7 +11,7 @@
         "@reduxjs/toolkit": "^2.2.7",
         "@vercel/analytics": "^0.1.10",
         "chart.js": "^4.4.4",
-        "i18next": "^23.14.0",
+        "i18next": "^23.15.1",
         "i18next-browser-languagedetector": "^8.0.0",
         "prop-types": "^15.8.1",
         "react": "^18.2.0",
@@ -4753,9 +4753,9 @@
       }
     },
     "node_modules/i18next": {
-      "version": "23.14.0",
-      "resolved": "https://registry.npmjs.org/i18next/-/i18next-23.14.0.tgz",
-      "integrity": "sha512-Y5GL4OdA8IU2geRrt2+Uc1iIhsjICdHZzT9tNwQ3TVqdNzgxHToGCKf/TPRP80vTCAP6svg2WbbJL+Gx5MFQVA==",
+      "version": "23.15.1",
+      "resolved": "https://registry.npmjs.org/i18next/-/i18next-23.15.1.tgz",
+      "integrity": "sha512-wB4abZ3uK7EWodYisHl/asf8UYEhrI/vj/8aoSsrj/ZDxj4/UXPOa1KvFt1Fq5hkUHquNqwFlDprmjZ8iySgYA==",
       "funding": [
         {
           "type": "individual",

frontend/package.json

@@ -22,7 +22,7 @@
     "@reduxjs/toolkit": "^2.2.7",
     "@vercel/analytics": "^0.1.10",
     "chart.js": "^4.4.4",
-    "i18next": "^23.14.0",
+    "i18next": "^23.15.1",
     "i18next-browser-languagedetector": "^8.0.0",
     "prop-types": "^15.8.1",
     "react": "^18.2.0",