Bump xunit from 2.4.1 to 2.5.0

Bumps [xunit](https://github.com/xunit/xunit) from 2.4.1 to 2.5.0.
- [Commits](xunit/xunit@2.4.1...2.5.0)

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

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

src/HttpHelper.Test/HttpHelper.Test.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.1</TargetFramework>
@@ -18,7 +18,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
     <PackageReference Include="NetStandardLogger" Version="2.0.8" />
     <PackageReference Include="NetStandardTestHelper" Version="1.0.27" />
-    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>