[RDBMS] az postgres flexible-server create: Set default PG version to 17 on create

Author: Matthew Boentoro

src/azure-cli/azure/cli/command_modules/rdbms/_params.py

@@ -597,7 +597,7 @@ def _flexible_server_params(command_group):
                 c.argument('tier', default='GeneralPurpose', arg_type=tier_arg_type)
                 c.argument('sku_name', default='Standard_D2s_v3', arg_type=sku_name_arg_type)
                 c.argument('storage_gb', default='128', arg_type=storage_gb_arg_type)
-                c.argument('version', default='16', arg_type=version_arg_type)
+                c.argument('version', default='17', arg_type=version_arg_type)
                 c.argument('backup_retention', default=7, arg_type=pg_backup_retention_arg_type)
                 c.argument('active_directory_auth', default='Disabled', arg_type=active_directory_auth_arg_type)
                 c.argument('microsoft_entra_auth', default='Disabled', arg_type=microsoft_entra_auth_arg_type)