chore(deps): add changeset for Expo SDK 56 upgrade

Co-authored-by: Kyle McDonald <kylemcd@users.noreply.github.com>

Author: cursoragent

.changeset/dependabot-pr-1005.md

@@ -0,0 +1,10 @@
+---
+"@knocklabs/expo-example": patch
+---
+
+chore(deps): upgrade expo-example to Expo SDK 56
+
+- Bump all Expo packages from SDK 55 to SDK 56 (expo, expo-router, expo-notifications, expo-splash-screen, etc.)
+- Remove @react-navigation/* deps (expo-router SDK 56 forked away from react-navigation)
+- Bump react-native from ^0.83.4 to ^0.85.3 (SDK 56 ships with RN 0.85)
+- Bump react-native-reanimated ~4.2.1 → ~4.3.1, react-native-screens ~4.23.0 → ~4.25.2, react-native-worklets ~0.7.2 → ~0.8.3