Bump Verify.NUnit from 31.0.1 to 31.7.1

---
updated-dependencies:
- dependency-name: Verify.NUnit
  dependency-version: 31.7.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tests/NHapi.NUnit.SourceGeneration/NHapi.NUnit.SourceGeneration.csproj

@@ -27,7 +27,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.10" />
-    <PackageReference Include="Verify.NUnit" Version="31.0.1" />
+    <PackageReference Include="Verify.NUnit" Version="31.7.1" />
   </ItemGroup>
 
   <ItemGroup>