Bump Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.XUnit

Bumps [Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.XUnit](https://github.com/dotnet/roslyn-sdk) from 1.0.1-beta1.21265.1 to 1.1.0.
- [Release notes](https://github.com/dotnet/roslyn-sdk/releases)
- [Commits](https://github.com/dotnet/roslyn-sdk/commits/1.1.0)

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

Refit.Tests/Refit.Tests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.8.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.XUnit" Version="1.0.1-beta1.21265.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.XUnit" Version="1.1.0" />
     <PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
     <ProjectReference Include="..\Refit.HttpClientFactory\Refit.HttpClientFactory.csproj" />
     <ProjectReference Include="..\Refit.Newtonsoft.Json\Refit.Newtonsoft.Json.csproj" />