(deps): Bump NUnit.Analyzers from 3.6.1 to 3.8.0

Bumps [NUnit.Analyzers](https://github.com/nunit/nunit.analyzers) from 3.6.1 to 3.8.0.
- [Release notes](https://github.com/nunit/nunit.analyzers/releases)
- [Changelog](https://github.com/nunit/nunit.analyzers/blob/master/CHANGES.txt)
- [Commits](nunit/nunit.analyzers@3.6.1...3.8.0)

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

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -24,7 +24,7 @@
     <PackageVersion Include="MSBuild.ProjectCreation" Version="10.0.0" />
     <PackageVersion Include="NSubstitute" Version="5.1.0" />
     <PackageVersion Include="NUnit" Version="3.13.3" />
-    <PackageVersion Include="NUnit.Analyzers" Version="3.6.1" />
+    <PackageVersion Include="NUnit.Analyzers" Version="3.8.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageVersion Include="JunitXml.TestLogger" Version="3.0.134" />
     <PackageVersion Include="Roslynator.Analyzers" Version="4.5.0" />