Bump MSTest.TestFramework from 3.2.0 to 3.3.1

Bumps [MSTest.TestFramework](https://github.com/microsoft/testfx) from 3.2.0 to 3.3.1.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v.3.2.0...v3.3.1)

---
updated-dependencies:
- dependency-name: MSTest.TestFramework
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Firely.Fhir.Packages.Tests.props

@@ -9,7 +9,7 @@
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.2.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.2.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.3.1" />
   </ItemGroup>
 
 	<PropertyGroup Condition=" '$(Configuration)' == 'Release' ">