Bump NUnit.Analyzers from 4.12.0 to 4.13.0

---
updated-dependencies:
- dependency-name: NUnit.Analyzers
  dependency-version: 4.13.0
  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

@@ -563,7 +563,7 @@
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="nunit" Version="4.5.1" />
-    <PackageReference Include="NUnit.Analyzers" Version="4.12.0">
+    <PackageReference Include="NUnit.Analyzers" Version="4.13.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>