main README out of date

[eero-t]

Main readme is a bit out of date: https://github.com/intel/intel-resource-drivers-for-kubernetes/#about-dynamic-resource-allocation

It talks about K8s 1.26+ and links the deprecated classic DRA KEP, and does not mention DRA reaching beta in K8s 1.32+ and the structured params KEP supported in that: https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/4381-dra-structured-parameters/README.md