chore(deps): update dependency verify.tunit to v31 (#41)

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

Author: renovate[bot]

Directory.Packages.props

@@ -19,6 +19,6 @@
     <PackageVersion Include="System.Memory" Version="4.6.3" />
     <PackageVersion Include="TUnit" Version="1.3.15" />
     <PackageVersion Include="Verify.ParametersHashing" Version="1.0.0" />
-    <PackageVersion Include="Verify.TUnit" Version="30.7.3" />
+    <PackageVersion Include="Verify.TUnit" Version="31.8.0" />
   </ItemGroup>
 </Project>