deps: update dependency microsoft.net.test.sdk to 17.12.0

Author: renovate[bot]

Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="FluentAssertions" Version="6.12.0" />
     <PackageVersion Include="FsCheck.Xunit" Version="2.16.6" />
     <PackageVersion Include="FsCheck" Version="2.16.6" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.0" />
     <PackageVersion Include="xunit" Version="2.4.2" />
   </ItemGroup>