Bump NUnit.Analyzers (#42142)

Bumps the dotnet group in /samples/snippets/core/testing/unit-testing-using-nunit/csharp with 1 update: [NUnit.Analyzers](https://github.com/nunit/nunit.analyzers).


Updates `NUnit.Analyzers` from 4.2.0 to 4.3.0
- [Release notes](https://github.com/nunit/nunit.analyzers/releases)
- [Changelog](https://github.com/nunit/nunit.analyzers/blob/master/CHANGES.md)
- [Commits](https://github.com/nunit/nunit.analyzers/compare/4.2.0...4.3.0)

---
updated-dependencies:
- dependency-name: NUnit.Analyzers
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

samples/snippets/core/testing/unit-testing-using-nunit/csharp/PrimeService.Tests/PrimeService.Tests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="nunit" Version="4.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="NUnit.Analyzers" Version="4.2.0">
+    <PackageReference Include="NUnit.Analyzers" Version="4.3.0">
         <PrivateAssets>all</PrivateAssets>
         <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>