docs: Mention rm KPR=probe and socket-LB proto in upgrade guide
docs: Mention rm KPR=probe and socket-LB proto in upgrade guide

Signed-off-by: Martynas Pumputis <6b0d31c0d563223024da45691584643ac78c96e8@lambda.lt>

cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium