Fix Unit Tests

Author: chkr1011

Source/MQTTnet.AspNetCore.Tests/MQTTnet.AspNetCore.Tests.csproj

@@ -9,9 +9,9 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-        <PackageReference Include="MSTest.TestAdapter" Version="3.5.2" />
-        <PackageReference Include="MSTest.TestFramework" Version="3.5.2" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
+        <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+        <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">

Source/MQTTnet.Tests/MQTTnet.Tests.csproj

@@ -12,9 +12,9 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="MSTest.TestAdapter" Version="3.5.2" />
-        <PackageReference Include="MSTest.TestFramework" Version="3.5.2" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+        <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+        <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
     </ItemGroup>
 
     <ItemGroup>