[tacker][ptg] Announcement about operator hours

Hello all:

The "operator-hour-tacker" has been reserved on 19-Oct Wednesday from 04UTC to 05UTC.

This is the oppotunity to share operator's opinion with developers.

Please feel free for adding any topics you'd like to discuss on the etherpad [1].

[1]https://etherpad.opendev.org/p/oct2022-ptg-operator-hour-tacker

Thanks, Masaki