Update dependency NUnit to v3.13.2 (#95)

Co-authored-by: Renovate Bot <[email protected]>

Author: xcomponentadmin

Cake.XComponent.Test/Cake.XComponent.Test.csproj

@@ -8,7 +8,7 @@
     <PackageReference Include="Cake.Core" Version="1.1.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
     <PackageReference Include="NSubstitute" Version="4.2.2" />
-    <PackageReference Include="NUnit" Version="3.13.1" />
+    <PackageReference Include="NUnit" Version="3.13.2" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
   </ItemGroup>