v1.16.0-pre.2

Major Changes:

• Move cilium/hubble code to cilium/cilium repo (cilium/cilium#31893, @michi-covalent)

Minor Changes:

• hubble: support drop_reason_desc in flow filter (cilium/cilium#32135, @chaunceyjiang)

Misc Changes:

• hive: Rebase on cilium/hive (cilium/cilium#32020, @bimmlerd)
• hubble: Support --cel-expression filter in hubble observe (cilium/cilium#32147, @chancez)