chore(deps): update dependency fluentassertions to 8.6.0

Author: renovate[bot]

dotnet/CucumberExpressions.Tests/CucumberExpressions.Tests.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="8.5.0" />
+    <PackageReference Include="FluentAssertions" Version="8.6.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.3">