[Housekeeping] Update NuGet Packages

[brminnick]

Description of Change

This PR updates the NuGet Packages in CommunityToolkit.Maui.Sample.

It also adds <WindowsSdkPackageVersion>10.0.19041.41</WindowsSdkPackageVersion> to CommunityToolkit.Maui.Sample.csproj which is required by CommunityToolkit.Mvvm v8.3.2:

This version of the MVVM Toolkit requires 'Microsoft.Windows.SDK.NET.Ref' version '10.0.19041.38' or later. Please update to .NET SDK 8.0.109, 8.0.305 or 8.Comm0.402 (or later). Alternatively, use a temporary 'Microsoft.Windows.SDK.NET.Ref' reference, which can be done by setting the 'WindowsSdkPackageVersion' property in your .csproj file. For your project configuration, it is recommended to set the package version to '10.0.19041.41'.

PR Checklist

• Rebased on top of main at time of PR
• Changes adhere to coding standard

Additional information