When you try to run yum update, you see an error like the following:
The GPG keys listed for the "MySQL 5.7 Community Server" repository are already installed but they are not correct for this package.
This is coming because the GPG key for Mysql 5.7 community repo has changed. To update the GPG key, you may run the following:
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
This shall resolves the issue for you. Good luck.