chore(deps): update dependency fluentassertions to v8

Author: renovate[bot]

Directory.Packages.props

@@ -50,7 +50,7 @@
         <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
         <PackageVersion Include="xunit" Version="2.9.3" />
         <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />
-        <PackageVersion Include="FluentAssertions" Version="[7.1.0,8.0.0)" />
+        <PackageVersion Include="FluentAssertions" Version="[7.1.0,8.5.0]" />
         <PackageVersion Include="Moq" Version="4.20.72" />
         <PackageVersion Include="AutoFixture" Version="4.18.1" />