feat: flutter 3.16

[Nirajn2311]

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

[Sembauke]

There seems to be an issue in the CI https://github.com/freeCodeCamp/mobile/actions/runs/8282205693/job/22662503298?pr=1171

I am guessing that it has to do with the workflows not being up to date.

[Sembauke]

I am getting the following warnings locally:
1.

'describeEnum' is deprecated and shouldn't be used. Use the `name` getter on enums instead. This feature was deprecated after v3.10.0-1.1.pre.
Try replacing the use of the deprecated member with the replacement.

'WillPopScope.new' is deprecated and shouldn't be used. Use PopScope instead. This feature was deprecated after v3.12.0-1.0.pre.
Try replacing the use of the deprecated member with the replacement.

This might be because I am not on the correct channel, or somehow I am still getting the errors from version v3.19.

Flutter Doctor (unofficial channel)

[!] Flutter (Channel [user-branch], 3.16.9, on macOS 14.0 23A344 darwin-arm64, locale en-NL)
    ! Flutter version 3.16.9 on channel [user-branch] at /Users/sembauke/Documents/flutter
      Currently on an unknown channel. Run `flutter channel` to switch to an official channel.
      If that doesn't fix the issue, reinstall Flutter by following instructions at https://flutter.dev/docs/get-started/install.
    ! Upstream repository unknown source is not a standard remote.
      Set environment variable "FLUTTER_GIT_URL" to unknown source to dismiss this error.
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
[✓] Android Studio (version 2021.3)
[✓] VS Code (version 1.87.2)
[✓] Connected device (1 available)
[✓] Network resources

[Nirajn2311]

There seems to be an issue in the CI freeCodeCamp/mobile/actions/runs/8282205693/job/22662503298?pr=1171

I am guessing that it has to do with the workflows not being up to date.

Nice catch. Yea, I hadn't updated the workflows. It had slipped my mind 🤦

[Nirajn2311]

I am getting the following warnings locally:

Strange. I fixed those two deprecation warnings already. Could you say from which files those warnings are coming from?