Switch to LFX for meetings

[avivkeller]

Ref: nodejs/admin#1024

The LFX meeting link is https://zoom-lfx.platform.linuxfoundation.org/meeting/96075006319?password=532f2ca8-9159-4002-8f55-55533138b68e, and will begin on December 11th, the meeting following the one this week.

[avivkeller]

cc @nodejs/release @nodejs/lts