DependencyInjection\Extension deprecation warning

[VarunAgw]

| Bug report? | yes
| Version/Branch | 1.4.0

The "Symfony\Component\HttpKernel\DependencyInjection\Extension" class is considered internal since Symfony 7.1, to be deprecated in 8.1; use Symfony\Component\DependencyInjection\Extension\Extension instead. It may change without further notice. You should not use it from "Overblog\GraphQLBundle\DependencyInjection\OverblogGraphQLExtension".