Bump Xamarin.TestCloud.Agent from 0.21.9 to 0.22.0

Bumps [Xamarin.TestCloud.Agent](https://github.com/calabash/calabash-ios-server) from 0.21.9 to 0.22.0.
- [Release notes](https://github.com/calabash/calabash-ios-server/releases)
- [Changelog](https://github.com/calabash/calabash-ios-server/blob/develop/CHANGELOG.md)
- [Commits](calabash/calabash-ios-server@0.21.9...0.22.0)

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

Packages.props

@@ -19,7 +19,7 @@
     <PackageReference Update="Xamarin.Android.Support.v4" Version="28.0.0.3" />
     <PackageReference Update="Xamarin.Android.Support.v7.CardView" Version="28.0.0.3" />
     <PackageReference Update="Xamarin.Android.Support.v7.MediaRouter" Version="28.0.0.3" />
-    <PackageReference Update="Xamarin.TestCloud.Agent" Version="0.21.9" />
+    <PackageReference Update="Xamarin.TestCloud.Agent" Version="0.22.0" />
     <PackageReference Update="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.2.10" />
   </ItemGroup>