Bump Microsoft.NET.Test.Sdk and Microsoft.NETFramework.ReferenceAssemblies (#166)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) and [Microsoft.NETFramework.ReferenceAssemblies](https://github.com/Microsoft/dotnet). These dependencies needed to be updated together.

Updates `Microsoft.NET.Test.Sdk` from 17.12.0 to 17.13.0
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.12.0...v17.13.0)

Updates `Microsoft.NETFramework.ReferenceAssemblies` from 1.0.3 to 1.0.3
- [Commits](https://github.com/Microsoft/dotnet/commits)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Microsoft.NETFramework.ReferenceAssemblies
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Build.props

@@ -19,7 +19,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <AkkaTestKitVersion>1.5.37</AkkaTestKitVersion>
-    <MicrosoftNetTestSdkVersion>17.12.0</MicrosoftNetTestSdkVersion>
+    <MicrosoftNetTestSdkVersion>17.13.0</MicrosoftNetTestSdkVersion>
     <NUnit3Version>3.14.0</NUnit3Version>
     <NUnit4Version>4.3.2</NUnit4Version>
     <NUnitAnalyzersVersion>4.6.0</NUnitAnalyzersVersion>