main
Replace all instances of <hr> in markdown files with ---
Update CHANGELOGs with 3.4.45, 3.5.31, 3.6.12, 3.7.0-rc.0 and 3.8.0 releases
changelog: add etcdctl RaftTerm fix entry for 3.5, 3.6 and 3.7
Add bbolt subcommand to etcdutl
change the minimum recommended etcd versions to run in production to 3.4.22+ and 3.5.6+