Upgrade various OCP clusters to latest 4.18 minor version
# CentOS Infra issue/request
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## Issue Type
* [] Issue - problem with something that was working
* [] Feature Request - something you'd like us to add/modify/change
* [x] Task - mostly used by CentOS Infra team for day-to-day operations or bigger plans
## Description
Some recent patches made it into latest OCP 4.18 version, including for copyfail/dirtyfrag and other security issues.
updating all our OCP clusters (staging and prod) to same version has to be done
issue