chore: update Customer.io native SDKs (iOS 4.1.0, Android 4.15.0)

[github-actions]

Summary

Automated update of Customer.io native SDK dependencies:

• iOS SDK: 4.0.0 → 4.1.0 (Release Notes)

Key Changes

iOS SDK 4.1.0

4.1.0 (2026-01-13)

Features

• In-app messages now support SSE (Server-Sent Events) as an alternative to polling, reducing latency and improving message delivery efficiency (#975) (c8345c5)

• Android SDK: 4.13.0 → 4.15.0 (Release Notes)

Android SDK 4.15.0

4.15.0 (2026-01-13)

Features

• In-app messages now support SSE (Server-Sent Events) as an alternative to polling, reducing latency and improving message delivery efficiency (#636) (6cba369)

Testing

• ✅ Flutter analysis passed
• ✅ Unit tests passed
• ✅ iOS compilation verified
• ✅ Android compilation verified
• ✅ Sample app builds successfully

Migration Notes

This update maintains API compatibility. Please test your integration thoroughly and review the release notes linked above for any specific changes that might affect your implementation.

---

🤖 This PR was automatically generated and tested

---

Note

Upgrade Customer.io native SDKs

• Android: set cioVersion to 4.15.0 in android/build.gradle for datapipelines, messaging-push-fcm, and messaging-in-app
• iOS: update plugin native_sdk_version to 4.1.0 in pubspec.yaml

Flutter package updates

• Bump plugin package to customer_io 3.1.1 in apps/amiapp_flutter/pubspec.lock and refresh transitive deps (e.g., meta 1.17.0, test_api 0.7.7)

^{Written by Cursor Bugbot for commit 80224a9. This will update automatically on new commits. Configure here.}

[mahmoud-elmorabea]

Already done in #298