Bump the xunit group with 2 updates (#379)

Author: dependabot[bot]

tests/ApplePayJS.Tests/ApplePayJS.Tests.csproj

@@ -15,8 +15,8 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="Microsoft.Playwright" Version="1.43.0" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
-    <PackageReference Include="xunit" Version="2.7.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.8" />
+    <PackageReference Include="xunit" Version="2.8.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.0" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="applepay-dev.pfx;testsettings.json;xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />