Etcd Patch Releases: v3.7.2, v3.6.15, and v3.5.34

SIG-etcd has distributed patch updates for all three supported release branches. These releases update dependencies, fix a file-handle leak during file cleanup, correct etcdctl endpoint status output, and improve version detection in v3.7. Users on v3.5, v3.6, and v3.7 should update at the next scheduled maintenance window after the releases become available.