Bump Moq from 4.18.1 to 4.18.4 in /src

Bumps [Moq](https://github.com/moq/moq4) from 4.18.1 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@v4.18.1...v4.18.4)

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

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

src/BBT.StructureTools.Tests/BBT.StructureTools.Tests.csproj

@@ -22,7 +22,7 @@
   <ItemGroup>
     <PackageReference Include="BBT.StrategyPattern" Version="1.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
-    <PackageReference Include="Moq" Version="4.18.1" />
+    <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="Ninject" Version="3.3.6" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">