Bump MSTest.TestAdapter from 2.1.2 to 2.2.3

Bumps [MSTest.TestAdapter](https://github.com/microsoft/testfx) from 2.1.2 to 2.2.3.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Commits](microsoft/testfx@v2.1.2...v2.2.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

dotnet-core-webapp.webtests/dotnetcore-webapp.webtests.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="5.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.1.2" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.3" />
     <PackageReference Include="MSTest.TestFramework" Version="2.1.2" />
     <PackageReference Include="coverlet.collector" Version="3.0.3" />
   </ItemGroup>