fix: upgrade example to latest sdk with ios

[sanak]

@ebouther (CC: @neiljaywarner)
Thanks!
I could upgrade example to run ios also from your PR:#117 and Issue:#73 comment!

@Yukams
If you have a time, checking this PR is really helpful. 🙇
Here is my environment and I confirmed that the example application works on both Android (Google Pixel6a) and iOS (iPhone 12 Pro).

% flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.22.1, on macOS 14.5 23F79 darwin-arm64, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0-rc4)
[✓] Xcode - develop for iOS and macOS (Xcode 15.4)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.3)
[✓] IntelliJ IDEA Community Edition (version 2024.1.1)
[✓] VS Code (version 1.89.1)
[✓] Connected device (5 available)
[✓] Network resources

• No issues found!

[sanak]

Sorry, I noticed that iOS release mode doesn't work...
I will try to solve the issue. 🙇
=> Well, the cause seemed that debug build version was still on my iPhone device.
After deleting debug build version, it works without problems. 😊

[sanak]

Well, I added more commits for Android update (gradle, sdk, etc.) with referring @moovida's recent commits and @stevehayles comment in #119.

But, I only checked on my Android 14 (Pixel 6a) device, so checking other OS/device is really helpful. 🙇