(CAT-2052) Bump SLES-15 package/product versions

 - Bump sles-module-legacy version from 15.5 to 15.6 since 15.5 is no longer available in the repos.
 - Bump postgresql-server version from 14 to 16 since 14 is no longer available in the default repos.

Author: shubhamshinde360

manifests/globals.pp

@@ -236,7 +236,7 @@
         /12\.0/     => '93',
         /12\.[1-3]/ => '94',
         /12\.[4-5]/ => '12',
-        /15\.[0-9]/ => '14',
+        /15\.[0-9]/ => '16',
         default     => '96',
       },
       'OpenSuSE' => $facts['os']['release']['full'] ? {

spec/spec_helper_acceptance_local.rb

@@ -46,8 +46,8 @@ def install_dependencies
     if $facts['os']['family'] in ['SLES', 'SUSE'] {
       exec { 'Enable legacy repos':
         path    => '/bin:/usr/bin/:/sbin:/usr/sbin',
-        command => 'SUSEConnect --product sle-module-legacy/15.5/x86_64',
-        unless  => 'SUSEConnect --status-text | grep sle-module-legacy/15.5/x86_64',
+        command => 'SUSEConnect --product sle-module-legacy/15.6/x86_64',
+        unless  => 'SUSEConnect --status-text | grep sle-module-legacy/15.6/x86_64',
       }
 
       package { 'net-tools-deprecated':