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

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](microsoft/vstest@v17.2.0...v17.3.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

src/Fusillade.Tests/Fusillade.Tests.csproj

@@ -15,7 +15,7 @@
 	<ItemGroup>
 		<PackageReference Include="akavache" Version="9.*" />
 		<PackageReference Include="ReactiveUI.Testing" Version="18.*" />
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.1" />
 		<PackageReference Include="xunit" Version="2.4.1" />
 		<PackageReference Include="xunit.runner.console" Version="2.4.1" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" />