chore(deps): bump xunit from 2.6.2 to 2.6.3

Bumps [xunit](https://github.com/xunit/xunit) from 2.6.2 to 2.6.3.
- [Commits](xunit/xunit@2.6.2...2.6.3)

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

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

test/Extism.Sdk/Extism.Sdk.Tests.csproj

@@ -12,7 +12,7 @@
 		<PackageReference Include="Extism.runtime.all" Version="1.0.0-rc3" Condition="'$(GITHUB_ACTIONS)' == 'false'" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
 		<PackageReference Include="Shouldly" Version="4.2.1" />
-		<PackageReference Include="xunit" Version="2.6.2" />
+		<PackageReference Include="xunit" Version="2.6.3" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.4">
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 			<PrivateAssets>all</PrivateAssets>