build(deps): bump expo-router from 4.0.22 to 55.0.12

Bumps [expo-router](https://github.com/expo/expo/tree/HEAD/packages/expo-router) from 4.0.22 to 55.0.12.
- [Changelog](https://github.com/expo/expo/blob/main/CHANGELOG.md)
- [Commits](https://github.com/expo/expo/commits/HEAD/packages/expo-router)

---
updated-dependencies:
- dependency-name: expo-router
  dependency-version: 55.0.12
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

mobile/package.json

@@ -15,7 +15,7 @@
     "react-native-web": "~0.19.13",
     "@expo/metro-runtime": "~4.0.1",
     "expo": "~52.0.0",
-    "expo-router": "~4.0.0",
+    "expo-router": "~55.0.12",
     "expo-status-bar": "~2.0.0",
     "expo-secure-store": "~14.0.0",
     "expo-constants": "~17.0.0",