Bump Moq from 4.18.3 to 4.18.4

Bumps [Moq](https://github.com/moq/moq4) from 4.18.3 to 4.18.4.
- [Release notes](https://github.com/moq/moq4/releases)
- [Changelog](https://github.com/moq/moq4/blob/main/CHANGELOG.md)
- [Commits](devlooped/moq@v4.18.3...v4.18.4)

---
updated-dependencies:
- dependency-name: Moq
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

tests/Directory.Build.props

@@ -5,7 +5,7 @@
     <PackageReference Include="bunit" Version="1.13.5" />
     <PackageReference Include="FluentAssertions" Version="6.8.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0-preview-20221221-03" />
-    <PackageReference Include="Moq" Version="4.18.3" />
+    <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>