chore(deps): update dependency i18next to v25.5.0

Author: renovate[bot]

frontend/package.json

@@ -45,7 +45,7 @@
     "dexie": "4.2.0",
     "fast-equals": "5.2.2",
     "hls.js": "1.6.11",
-    "i18next": "25.4.2",
+    "i18next": "25.5.0",
     "i18next-vue": "5.3.0",
     "libpgs": "0.8.1",
     "sortablejs": "1.15.6",