Bump xunit.core from 2.5.3 to 2.6.0

Bumps [xunit.core](https://github.com/xunit/xunit) from 2.5.3 to 2.6.0.
- [Commits](xunit/xunit@2.5.3...2.6.0)

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

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

Author: dependabot[bot]

src/Xunit.Microsoft.DependencyInjection.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <LangVersion>latest</LangVersion>
@@ -12,7 +12,7 @@
     <PackageReference Include="xunit.abstractions" Version="2.0.3" />
     <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="7.0.0" />
-    <PackageReference Include="xunit.core" Version="2.5.3" />
+    <PackageReference Include="xunit.core" Version="2.6.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="7.0.0" />
   </ItemGroup>
   <ItemGroup>