v3.7.0
server,etcdutl: Preserve etcd version in backend allowing etcdutl to read it from snapshot
refactor IsValidVersionChange.
server: Move downgrade API logic into version package
Wait for cluster version to non-default value to remove errors when cluster is bootstrapping.
*: fix unused issue
tests: Fix cluster version and downgrade request timeout
server: address Go 1.24 usetesting issues