Update dependencies

Bump Microsoft.NET.Test.Sdk from 17.8.0 to 17.9.0

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.8.0 to 17.9.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.8.0...v17.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Bump xunit from 2.6.6 to 2.7.0

Bumps [xunit](https://github.com/xunit/xunit) from 2.6.6 to 2.7.0.
- [Commits](xunit/xunit@2.6.6...2.7.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Bump xunit.runner.visualstudio from 2.5.6 to 2.5.7

Bumps [xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit) from 2.5.6 to 2.5.7.
- [Release notes](https://github.com/xunit/visualstudio.xunit/releases)
- [Commits](xunit/visualstudio.xunit@2.5.6...2.5.7)

---
updated-dependencies:
- dependency-name: xunit.runner.visualstudio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

test/LoadTestToolbox.Tests.csproj

@@ -5,11 +5,11 @@
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
 		<PackageReference Include="NSubstitute" Version="5.1.0" />
 		<PackageReference Include="Spectre.Console.Testing" Version="0.48.0" />
-		<PackageReference Include="xunit" Version="2.6.6" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.6" />
+		<PackageReference Include="xunit" Version="2.7.0" />
+		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.7" />
 		<PackageReference Include="coverlet.collector" Version="6.0.0" />
 		<ProjectReference Include="..\src\LoadTestToolbox.csproj" />
 	</ItemGroup>