bump DOCA to 3.1.0

Author: wtripp180901

ansible/roles/doca/defaults/main.yml

@@ -1,3 +1,3 @@
-doca_version: '2.9.3' # 2.9 is LTS, last to support ConnectX-4, 3 years for bug fixes and CVE updates
+doca_version: '3.1.0'
 doca_profile: doca-ofed
 doca_repo_url: "https://linux.mellanox.com/public/repo/doca/{{ doca_version }}/rhel{{ ansible_distribution_version }}/{{ ansible_architecture }}/"