Update dependency FluentValidation to v11.8.0

Author: renovate[bot]

people-service/PeopleService.WebApi/PeopleService.WebApi.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentValidation" Version="11.5.2" />
+    <PackageReference Include="FluentValidation" Version="11.8.0" />
     <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
     <PackageReference Include="MediatR" Version="12.0.1" />
     <PackageReference Include="Serilog.AspNetCore" Version="6.1.0" />