Update our Symfony components.
Update our Symfony components.

A security issue has been fixed in the http-kernel. By upgrading our
symfony related dependencies, we're save again!

matthiasmullie/forkcms,jacob-v-dam/forkcms,tommyvdv/forkcms,Katrienvh/forkcms,vytenizs/forkcms,vytenizs/forkcms,bartdc/forkcms,mathiashelin/forkcms,matthiasmullie/forkcms,jonasdekeukelaere/forkcms,carakas/forkcms,Thijzer/forkcms,wengyulin/forkcms,matthiasmullie/forkcms,forkcms/forkcms,justcarakas/forkcms,jonasdekeukelaere/forkcms,vytenizs/forkcms,bartdc/forkcms,sumocoders/forkcms,jonasdekeukelaere/forkcms,jacob-v-dam/forkcms,forkcms/forkcms,ikoene/forkcms,jonasdekeukelaere/forkcms,dmoerman/forkcms,jeroendesloovere/forkcms,forkcms/forkcms,riadvice/forkcms,tommyvdv/forkcms,ikoene/forkcms,forkcms/forkcms,Katrienvh/forkcms,jeroendesloovere/forkcms,jeroendesloovere/forkcms,dmoerman/forkcms,DegradationOfMankind/forkcms,DegradationOfMankind/forkcms,jessedobbelaere/forkcms,justcarakas/forkcms,Katrienvh/forkcms,jeroendesloovere/forkcms,nosnickid/forkcms,DegradationOfMankind/forkcms,nosnickid/forkcms,carakas/forkcms,jessedobbelaere/forkcms,jacob-v-dam/forkcms,riadvice/forkcms,carakas/forkcms,tommyvdv/forkcms,nosnickid/forkcms,Katrienvh/forkcms,riadvice/forkcms,jacob-v-dam/forkcms,sumocoders/forkcms,wengyulin/forkcms,riadvice/forkcms,Thijzer/forkcms,mathiashelin/forkcms,sumocoders/forkcms,justcarakas/forkcms,vytsci/forkcms,mathiashelin/forkcms,ikoene/forkcms,sumocoders/forkcms,wengyulin/forkcms,carakas/forkcms,jessedobbelaere/forkcms,DegradationOfMankind/forkcms,jonasdekeukelaere/forkcms,dmoerman/forkcms,carakas/forkcms,sumocoders/forkcms,tommyvdv/forkcms,jessedobbelaere/forkcms,vytsci/forkcms,vytsci/forkcms,Thijzer/forkcms,bartdc/forkcms,mathiashelin/forkcms