Updated Microsoft Test packages

This includes the `Microsoft.NET.Test.Sdk`, `MSTest.TestAdapter`, and `MSTest.TestFramework`. Confirmed that all unit tests continue to work as expected. As the test projects are not distributed as packages, this doesn't have any downstream effects.

Author: JeremyCaney

OnTopic.AspNetCore.Mvc.Tests/OnTopic.AspNetCore.Mvc.Tests.csproj

@@ -6,9 +6,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.1.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.1.2" />
   </ItemGroup>
 
   <ItemGroup>

OnTopic.Tests/OnTopic.Tests.csproj

@@ -31,9 +31,9 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.1.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.1.2" />
   </ItemGroup>
 
   <ItemGroup>