Updated pinned package version

Author: rubo

src/Directory.Packages.props

@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="BenchmarkDotNet" Version="0.14.0" />
-    <PackageVersion Include="FluentAssertions" Version="[7.0.0, 8)" />
+    <PackageVersion Include="FluentAssertions" Version="[7.1.0]" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <PackageVersion Include="NUnit" Version="4.3.2" />