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]>

APIMatic.Core.Test/APIMatic.Core.Test.csproj

@@ -18,7 +18,7 @@
         </PackageReference>
         <PackageReference Include="NUnit" Version="3.13.3" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.3.1" />
-        <PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
+        <PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
         <PackageReference Include="System.Net.Http.Json" Version="7.0.1" />
     </ItemGroup>