[nova] Hold your rechecks

Hey, Due to the recent merge of https://review.opendev.org/c/openstack/requirements/+/872065/10/upper-constr... we now use mypy==1.1.1 which includes a breaking behavioural change against our code : https://07de6a0c9e6ec0c6835f-ccccbfab26b1456f69293167016566bc.ssl.cf2.rackcd... Thanks to Eric (kudos to him, he was quickier than me), we have a fix https://review.opendev.org/c/openstack/nova/+/878693 Please accordingly hold your rechecks until that fix is merged. -Sylvain