Installing latest version of MariaDB on Amazon Linux 2 and Amazon Linux 2023

For Amazon Linux2, follow the steps below to add a repository.
https://mariadb.org/download/?t=repo-config&d=CentOS+7&v=10.11&r_m=xtom_jp

sudo amazon-linux-extras install epel -y
sudo yum update -y
sudo vi /etc/yum.repos.d/MariaDB.repo

# MariaDB 10.11 CentOS repository list - created 2023-06-07 08:48 UTC
# https://mariadb.org/download/
[mariadb]
name = MariaDB
# rpm.mariadb.org is a dynamic mirror if your preferred mirror goes offline. See https://mariadb.org/mirrorbits/ for details.
# baseurl = https://rpm.mariadb.org/10.11/centos/$releasever/$basearch
baseurl = https://mirrors.xtom.jp/mariadb/yum/10.11/centos/$releasever/$basearch
module_hotfixes = 1
# gpgkey = https://rpm.mariadb.org/RPM-GPG-KEY-MariaDB
gpgkey = https://mirrors.xtom.jp/mariadb/yum/RPM-GPG-KEY-MariaDB
gpgcheck = 1

sudo yum install MariaDB-server MariaDB-client -y

I don't know how to do this for Amazon Linux 2023 and will add it when I figure it out.

I am seeing that you have commented out # baseurl = https://rpm.mariadb.org/10.11/rhel/$releasever/$basearch instead you are using baseurl = https://mirrors.xtom.jp/mariadb/yum/10.11/rhel/9/$basearch . Is this source mirrors.xtom.jp reliable ? By the way thanks a ton you saved my day. But, I am unsure if i should install through mirrors, I am concerned about security issues still.