Bump the xunit group with 2 updates

Bumps the xunit group with 2 updates: [xunit](https://github.com/xunit/xunit) and [xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit).


Updates `xunit` from 2.7.1 to 2.8.0
- [Commits](xunit/xunit@2.7.1...2.8.0)

Updates `xunit.runner.visualstudio` from 2.5.8 to 2.8.0
- [Release notes](https://github.com/xunit/visualstudio.xunit/releases)
- [Commits](xunit/visualstudio.xunit@2.5.8...2.8.0)

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

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

Directory.Packages.props

@@ -131,9 +131,9 @@
     <PackageVersion Include="Testcontainers.CosmosDb" Version="3.8.0" />
     <PackageVersion Include="Testcontainers.MsSql" Version="3.8.0" />
     <PackageVersion Include="Testcontainers.RabbitMq" Version="3.8.0" />
-    <PackageVersion Include="xunit" Version="2.7.1" />
+    <PackageVersion Include="xunit" Version="2.8.0" />
     <PackageVersion Include="xunit.abstractions" Version="2.0.3" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.8" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.0" />
     <PackageVersion Include="Xunit.SkippableFact" Version="1.4.13" />
   </ItemGroup>
 </Project>