build(deps): Update dependency FluentAssertions to 8.1.1

Directory.Packages.props

@@ -50,7 +50,7 @@
     <PackageVersion Include="AutoFixture.AutoNSubstitute" Version="5.0.0-preview0012" PrivateAssets="all" />
     <PackageVersion Include="AutoFixture.NUnit4" Version="5.0.0-preview0012" PrivateAssets="all" />
     <PackageVersion Include="coverlet.collector" Version="6.0.4" PrivateAssets="all" />
-    <PackageVersion Include="FluentAssertions" Version="8.0.1" PrivateAssets="all" />
+    <PackageVersion Include="FluentAssertions" Version="8.1.1" PrivateAssets="all" />
     <PackageVersion Include="FluentAssertions.Analyzers" Version="0.34.1" PrivateAssets="all" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" PrivateAssets="all" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" PrivateAssets="all" />