Update to 2.20.1 fix the issue, the stock python3-requests on RL8.9 is too old.
[me@rocky8t01d zabbix-cli]$ sudo pip3.6 install --upgrade requests==2.20.1
[me@rocky8t01d zabbix-cli]$ zabbix-cli -C "shell cat /etc/redhat-release"
Rocky Linux release 8.9 (Green Obsidian)
[me@rocky8t01d zabbix-cli]$ date
Mon Nov 27 11:57:15 CST 2023
[me@rocky8t01d zabbix-cli]$