Bump NUnit.Analyzers from 4.5.0 to 4.6.0 in /samples (#362)

Bumps [NUnit.Analyzers](https://github.com/nunit/nunit.analyzers) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/nunit/nunit.analyzers/releases)
- [Changelog](https://github.com/nunit/nunit.analyzers/blob/master/CHANGES.md)
- [Commits](nunit/nunit.analyzers@4.5.0...4.6.0)

---
updated-dependencies:
- dependency-name: NUnit.Analyzers
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/CommunityToolkit.Maui.Markup.UnitTests/CommunityToolkit.Maui.Markup.UnitTests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.3" PrivateAssets="all" />
-    <PackageReference Include="NUnit.Analyzers" Version="4.5.0" PrivateAssets="all" />
+    <PackageReference Include="NUnit.Analyzers" Version="4.6.0" PrivateAssets="all" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="CommunityToolkit.Maui" Version="$(MauiCommunityToolkitPackageVersion)" />
     <PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiPackageVersion)"/>