Bug#1120918: etcd: new upstream version (3.6.6) available

[Berkay Tekin Oz]

Source: etcd
Severity: wishlist

Dear Go packaging team,

There is a new version (3.6.6) available upstream. Could we kindly
update to the new version?
I'm willing to help contribute the version update as well. Many thanks!

Kind regards,
Berkay