chore(deps): update dependency verify.xunit to 31.9.4 (#44)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Tests/Approval.Tests/Approval.Tests.csproj

@@ -14,7 +14,7 @@
     </PackageReference>
     <PackageReference Include="PublicApiGenerator" Version="11.5.3" />
     <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageReference Include="Verify.Xunit" Version="31.7.3" />
+    <PackageReference Include="Verify.Xunit" Version="31.9.4" />
   </ItemGroup>
 
 </Project>