Bump xunit from 2.7.1 to 2.8.0

Bumps [xunit](https://github.com/xunit/xunit) from 2.7.1 to 2.8.0.
- [Commits](xunit/xunit@2.7.1...2.8.0)

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

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

Octokit.Tests.Conventions/Octokit.Tests.Conventions.csproj

@@ -34,7 +34,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="xunit" Version="2.7.1" />
+    <PackageReference Include="xunit" Version="2.8.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.8" />
   </ItemGroup>
 

Octokit.Tests.Integration/Octokit.Tests.Integration.csproj

@@ -36,7 +36,7 @@
 	<PackageReference Include="GitHubJwt" Version="0.0.6" />
 	<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
 	<PackageReference Include="System.IO.Compression" Version="4.3.0" />
-  <PackageReference Include="xunit" Version="2.7.1" />
+  <PackageReference Include="xunit" Version="2.8.0" />
   <PackageReference Include="xunit.runner.visualstudio" Version="2.5.8" />
   </ItemGroup>
 

Octokit.Tests/Octokit.Tests.csproj

@@ -35,7 +35,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
-    <PackageReference Include="xunit" Version="2.7.1" />
+    <PackageReference Include="xunit" Version="2.8.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.8" />
   </ItemGroup>