Bump FluentAssertions from 6.12.1 to 8.10.0

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

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

Author: dependabot[bot]

Directory.Packages.props

@@ -15,6 +15,6 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="xunit" Version="2.9.2" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
-    <PackageVersion Include="FluentAssertions" Version="6.12.1" />
+    <PackageVersion Include="FluentAssertions" Version="8.10.0" />
   </ItemGroup>
 </Project>