Bump i18next from 26.0.1 to 26.0.3 and react-i18next from 17.0.1 to 17.0.2

Previous attempt left duplicate i18next versions in the lockfile
(26.0.1 for @trails-cool/i18n peer dep, 26.0.3 for root). This caused
two different i18next instances at runtime, breaking i18n initialization
and leaving pages blank in E2E tests.

Fix: update specifiers and run pnpm dedupe to ensure a single version.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -53,7 +53,7 @@
     "eslint": "^10.2.0",
     "eslint-config-prettier": "^10.1.8",
     "fit-file-parser": "^2.3.3",
-    "i18next": "^26.0.1",
+    "i18next": "^26.0.3",
     "i18next-browser-languagedetector": "^8.2.1",
     "jsdom": "^29.0.1",
     "leaflet": "^1.9.4",
@@ -63,7 +63,7 @@
     "prettier": "^3.8.1",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
-    "react-i18next": "^17.0.1",
+    "react-i18next": "^17.0.2",
     "react-leaflet": "^5.0.0",
     "react-router": "catalog:",
     "tailwindcss": "^4.2.2",