build(deps): Update Moq requirement from 4.18.* to 4.20.*

Updates the requirements on [Moq](https://github.com/moq/moq) to permit the latest version.
- [Release notes](https://github.com/moq/moq/releases)
- [Changelog](https://github.com/moq/moq/blob/main/CHANGELOG.md)
- [Commits](moq/moq.spikes@v4.18.0...v4.20.1)

---
updated-dependencies:
- dependency-name: Moq
  dependency-type: direct:production
...

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

Packages.props

@@ -152,7 +152,7 @@
     <PackageReference Update="ILogger.Moq" Version="1.1.*" />
     <PackageReference Update="Microsoft.AspNetCore.Mvc.Testing" Version="$(AspNetCoreMvcTestingVersion)" />
     <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.6.3" />
-    <PackageReference Update="Moq" Version="4.18.*" />
+    <PackageReference Update="Moq" Version="4.20.*" />
     <PackageReference Update="xunit" Version="2.4.2" />
     <PackageReference Update="Xunit.DependencyInjection.Logging" Version="8.1.*" />
     <PackageReference Update="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="All" IncludeAssets="runtime; build; native; contentfiles; analyzers" />