1.20 -> 1.21 Release Notes mailing list membership
1.20 -> 1.21 Release Notes mailing list membership

GitHub       -> Email
ashnehete    -> ashnehete@gmail.com
melodychn    -> meloncattiel@gmail.com
pmmalinov    -> pmmalinov01@gmail.com
soniasingla  -> soniasingla.1812@gmail.com
wilsonehusin -> wilsonehusin@gmail.com

Signed-off-by: Wilson E. Husin <b369e6c8b9aca6da968cb146577b22385299a7e0@vmware.com>

kubernetes/k8s.io,kubernetes/k8s.io,kubernetes/k8s.io,kubernetes/k8s.io