Bump Verify from 28.7.1 to 28.8.1 in /src (#2)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="Polyfill" Version="7.11.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.147" />
     <PackageVersion Include="Ulid" Version="1.3.4" />
-    <PackageVersion Include="Verify" Version="28.7.1" />
+    <PackageVersion Include="Verify" Version="28.8.1" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.NUnit" Version="28.7.1" />
   </ItemGroup>