Update dependency Verify.NUnit to 31.1.0

Author: renovate-bot

src/ARI.Tests/ARI.Tests.csproj

@@ -69,7 +69,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Verify.NUnit" Version="31.0.4" />
+    <PackageReference Include="Verify.NUnit" Version="31.1.0" />
     <PackageReference Include="Devlead.Testing.MockHttp" Version="2025.10.15.353" />
     <PackageReference Include="Cake.Testing" Version="5.1.0" />
     <PackageReference Include="NSubstitute" Version="5.3.0" />