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]

test/Microsoft.OpenApi.Hidi.Tests/Microsoft.OpenApi.Hidi.Tests.csproj

@@ -14,7 +14,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
-    <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>

test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj

@@ -25,7 +25,7 @@
     </PackageReference>
     <PackageReference Include="FluentAssertions" Version="6.8.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
-    <PackageReference Include="Moq" Version="4.18.3" />
+    <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="SharpYaml" Version="2.1.0" />
     <PackageReference Include="Verify.Xunit" Version="19.5.0" />