Merge pull request #257 from brendon-stephens/patch-1

set the default postgres version to "13" for RHEL9 (fixes #252)

Author: geerlingguy

vars/RedHat-9.yml

@@ -1,5 +1,5 @@
 ---
-__postgresql_version: "10"
+__postgresql_version: "13"
 __postgresql_data_dir: "/var/lib/pgsql/data"
 __postgresql_bin_path: "/usr/bin"
 __postgresql_config_path: "/var/lib/pgsql/data"