[Housekeeping] Increase minimum .NET SDK dependency to v9.0.202

[TheCodeTraveler]

Description of Change

This PR increases our minimum .NET SDK version to v9.0.2.02 to coincide with increasing our Microsoft.Maui.* dependency to v9.0.50.

Increasing the minimum .NET SDK version ensures that users are required to install the latest .NET MAUI workloads to correspond with the Microsoft.Maui.* v9.0.50 libraries.

Additional information

We will need to include the following in our next release notes:

Requirements

The following tools are now required for CommunityToolkit.Maui:

• Download/install .NET SDK v9.0.202
• Install Xcode 16.2.0 (or higher)
  • Read the latest .NET MAUI Release wiki to always find the latest-supported version) of Xcode for .NET MAUI
  • We HIGHLY recommend using the open-source tool Xcodes to easily manage your installed Xcode versions
• Update to the latest stable version of Visual Studio (or Jet Brains Rider)
• After installing the latest stable .NET SDK, update to the latest stable version of the .NET MAUI workload:
  • On macOS, open the Terminal and enter the following command: sudo dotnet workload install maui; sudo dotnet workload update
  • On Windows, open the command prompt (or Powershell) and enter the following command: dotnet workload install maui;dotnet workload update
• Add a global.json file to your application with the following parameters to ensure you're not using a unsupported preview version of .NET (example below)
  • The .NET MAUI Community Toolkit does not support preview releases of .NET

global.json

{
  "sdk": {
    "version": "9.0.202", 
    "rollForward": "latestFeature",
    "allowPrerelease": false
  }
}

[Copilot]

Pull Request Overview

This PR increases the minimum .NET SDK dependency to v9.0.202 to align with the updated Microsoft.Maui.* dependency requirements.

• Updated TOOLKIT_NET_VERSION in azure-pipelines.yml from '9.0.200' to '9.0.202'
• Updated TOOLKIT_NET_VERSION in .github/workflows/dotnet-build.yml from '9.0.200' to '9.0.202'

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
azure-pipelines.yml	Updated the SDK version variable to reflect v9.0.202
.github/workflows/dotnet-build.yml	Updated the SDK version variable to reflect v9.0.202

Files not reviewed (1)

• global.json: Language not supported

[pictos]

LGTM. Forgot this piece when I bump the package version 😅

[TheCodeTraveler]

Thanks Pedro! No worries at all!

I didn't notice it myself until just today. Fortunately, we're able to sneak in this PR before our next Release 🙌