chore(deps): update dependency verify.tunit to 31.18.0 (#525)

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

Author: renovate[bot]

Directory.Packages.props

@@ -26,6 +26,6 @@
     <PackageVersion Include="NSubstitute" Version="5.3.0" />
     <PackageVersion Include="PublicApiGenerator" Version="11.5.4" />
     <PackageVersion Include="TUnit" Version="1.45.29" />
-    <PackageVersion Include="Verify.TUnit" Version="31.17.0" />
+    <PackageVersion Include="Verify.TUnit" Version="31.18.0" />
   </ItemGroup>
 </Project>