Bump xunit from 2.8.1 to 2.9.3

Bumps [xunit](https://github.com/xunit/xunit) from 2.8.1 to 2.9.3.
- [Commits](xunit/xunit@v2-2.8.1...v2-2.9.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Directory.Packages.props

@@ -22,7 +22,7 @@
 	  <PackageVersion Include="Docker.DotNet" Version="3.125.15" />
 	  <PackageVersion Include="Akka.Persistence.TCK" Version="$(AkkaVersion)" />
 	  <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
-	  <PackageVersion Include="xunit" Version="2.8.1" />
+	  <PackageVersion Include="xunit" Version="2.9.3" />
 	  <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
   </ItemGroup>
   <!-- SourceLink support for all Akka.NET projects -->