Bump nunit from 4.0.1 to 4.1.0

Bumps [nunit](https://github.com/nunit/nunit) from 4.0.1 to 4.1.0.
- [Release notes](https://github.com/nunit/nunit/releases)
- [Changelog](https://github.com/nunit/nunit/blob/master/CHANGES.md)
- [Commits](nunit/nunit@v4.0.1...4.1.0)

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

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

Author: dependabot[bot]

src/dnsimple-test/dnsimple-test.csproj

@@ -595,7 +595,7 @@
   <ItemGroup>
     <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="nunit" Version="4.0.1" />
+    <PackageReference Include="nunit" Version="4.1.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>