npm: bump expo from 48.0.19 to 49.0.18 in /demo

Bumps [expo](https://github.com/expo/expo/tree/HEAD/packages/expo) from 48.0.19 to 49.0.18.
- [Changelog](https://github.com/expo/expo/blob/main/CHANGELOG.md)
- [Commits](https://github.com/expo/expo/commits/HEAD/packages/expo)

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

Signed-off-by: dependabot[bot] <[email protected]>

demo/package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "@react-navigation/native": "^6.0.16",
     "@react-navigation/native-stack": "^6.9.4",
-    "expo": "48.0.19",
+    "expo": "49.0.18",
     "expo-linear-gradient": "^12.1.2",
     "expo-status-bar": "^1.4.4",
     "react": "^18.2.0",