chore(deps): update dependency fluentassertions to 8.4.0

Author: pactflow-renovate-bot[bot]

src/consumer.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="8.3.0" />
+    <PackageReference Include="FluentAssertions" Version="8.4.0" />
   </ItemGroup>
 
 </Project>