Update dependency Verify.Http to v7

Author: devlead

src/Devlead.Testing.MockHttp/Devlead.Testing.MockHttp.Dependencies.props

@@ -5,7 +5,7 @@
       </ItemGroup>
 
       <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
-        <PackageReference Include="Verify.Http" VersionOverride="6.4.1" Pack="false" />
+        <PackageReference Include="Verify.Http" VersionOverride="7.5.1" Pack="false" />
         <PackageFile PackFolder="Dependency" Include="Verify.Http" Version="6.4.1" />
 
         <PackageReference Include="Microsoft.Extensions.Http" VersionOverride="8.0.1" Pack="false" />