It is possible but requires an unofficial repo from Snapcraft as Amazon Linux 2 (AL2) does not have Selinux. I never saw a comprehensive doc of instructions but have notes on how to do it as I went through the process. I thought I might need to for someone to get certbot 1.12 for the "short chain" selection but I never saw it come up.
Amazon Linux 2022 (AL2022) is the successor to AL2 and has Selinux so hopefully certbot snap will install cleanly. AL2022 is still in preview.