Bump FluentAssertions from 8.9.0 to 8.10.0

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-version: 8.10.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -5,7 +5,7 @@
   <ItemGroup>
     <PackageVersion Include="AngleSharp" Version="1.7.2" />
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />
-    <PackageVersion Include="FluentAssertions" Version="8.9.0" />
+    <PackageVersion Include="FluentAssertions" Version="8.10.0" />
     <PackageVersion Include="Microsoft.Agents.AI" Version="1.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Configuration" Version="10.0.11" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.11" />