Update dependency Xunit.Assert to 2.9.3 (#1355)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Directory.Packages.props

@@ -35,7 +35,7 @@
     <PackageVersion Include="System.Text.Encodings.Web" Version="4.7.1" />
     <PackageVersion Include="System.Text.Json" Version="4.7.2" />
     <PackageVersion Include="Xunit.Combinatorial" Version="2.0.24" />
-    <PackageVersion Include="Xunit.Assert" Version="2.3.0" />
+    <PackageVersion Include="Xunit.Assert" Version="2.9.3" />
   </ItemGroup>
   <ItemGroup Condition="'$(IsTestProject)'!='true'">
     <!-- These versions carefully chosen to support VS 2019 Update 11. -->