build(deps): Bump Microsoft.NET.Test.Sdk from 17.2.0 to 17.3.1 in /src (#85)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.2.0 to 17.3.1.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](https://github.com/microsoft/vstest/compare/v17.2.0...v17.3.1)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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src/Avalonia.NameGenerator.Tests/Avalonia.NameGenerator.Tests.csproj

@@ -10,7 +10,7 @@
         <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.9.0" />
         <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="3.9.0" />
         <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.3" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.1" />
         <PackageReference Include="xunit" Version="2.4.2" />
         <PackageReference Include="xunit.runner.console" Version="2.4.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" />