dep: Update mstest monorepo to v3.1.1

UnitTest/UnitTest.csproj

@@ -10,8 +10,8 @@
     <PackageReference Include="Dns.Net" Version="0.2.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
     <PackageReference Include="Moq" Version="4.18.4" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.4" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.4" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
     <PackageReference Include="coverlet.collector" Version="6.0.0" PrivateAssets="all" /> 
   </ItemGroup>