ansible: install Python 3.12 on RHEL 9 (#4215)

Refs: #4208

Author: richardlau

ansible/roles/baselayout/tasks/partials/repo/rhel9.yml

@@ -8,7 +8,19 @@
     key: https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-9
     state: present
 
-- name: install EPEL 8
+- name: install EPEL 9
   ansible.builtin.dnf:
     name: https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
     state: present
+
+- name: install Python 3.12
+  ansible.builtin.dnf:
+    name: ['python3.12','python3.12-pip']
+    state: present
+  notify: package updated
+
+- name: update python3 package alternatives
+  community.general.alternatives:
+    link: /usr/bin/python3
+    name: python3
+    path: /usr/bin/python3.12