dep: Update dependency Moq to v4.18.4

UnitTest/UnitTest.csproj

@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Dns.Net" Version="0.2.0" />
     <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="MSTest.TestAdapter" Version="3.0.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="coverlet.collector" Version="3.2.0" PrivateAssets="all" />