Bump Moq from 4.16.1 to 4.18.4

Bumps [Moq](https://github.com/moq/moq4) from 4.16.1 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@v4.16.1...v4.18.4)

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

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

Author: dependabot[bot]

Flow.Launcher.Test/Flow.Launcher.Test.csproj

@@ -48,7 +48,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Moq" Version="4.16.1" />
+    <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="nunit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.3.1">
       <PrivateAssets>all</PrivateAssets>