build(deps): bump RichardSzalay.MockHttp from 6.0.0 to 7.0.0

Bumps [RichardSzalay.MockHttp](https://github.com/richardszalay/mockhttp) from 6.0.0 to 7.0.0.
- [Release notes](https://github.com/richardszalay/mockhttp/releases)
- [Changelog](https://github.com/richardszalay/mockhttp/blob/master/CHANGELOG)
- [Commits](richardszalay/mockhttp@v6.0.0...v7.0.0)

---
updated-dependencies:
- dependency-name: RichardSzalay.MockHttp
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Refit.Tests/Refit.Tests.csproj

@@ -21,7 +21,7 @@
     <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.2.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.6.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.XUnit" Version="1.1.2-beta1.23476.1" />
-    <PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
+    <PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
     <ProjectReference Include="..\Refit.HttpClientFactory\Refit.HttpClientFactory.csproj" />
     <ProjectReference Include="..\Refit.Newtonsoft.Json\Refit.Newtonsoft.Json.csproj" />
     <ProjectReference Include="..\Refit.Xml\Refit.Xml.csproj" />