Bump MSTest.TestAdapter from 2.2.7 to 2.2.10

Bumps [MSTest.TestAdapter](https://github.com/microsoft/testfx) from 2.2.7 to 2.2.10.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Commits](microsoft/testfx@v2.2.7...v2.2.10)

---
updated-dependencies:
- dependency-name: MSTest.TestAdapter
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/firely-net-sdk-tests.props

@@ -19,7 +19,7 @@
 
 	<ItemGroup Condition="'$(TargetFramework)' != 'net40'">
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
-		<PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
+		<PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
 		<PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
 		<PackageReference Include="xunit" Version="2.4.1" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">