Update to latest NUnit v3

src/Abc.Zebus.Testing/Abc.Zebus.Testing.csproj

@@ -14,7 +14,7 @@
     <PackageReference Include="AutoFixture" Version="4.17.0" />
     <PackageReference Include="CompareNETObjects" Version="4.71.0" />
     <PackageReference Include="Moq" Version="4.17.2" />
-    <PackageReference Include="NUnit" Version="3.13.1" />
+    <PackageReference Include="NUnit" Version="3.14.0" />
     <PackageReference Include="System.Management" Version="6.0.0" />
   </ItemGroup>
 

src/Abc.Zebus.Tests.props

@@ -7,9 +7,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
-    <PackageReference Include="NUnit" Version="3.13.3" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.4.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
 
     <!-- This updates an older version referenced by log4net -->
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="6.0.0" />