feat: (IAC-1346) Update external Postgres server default version to 15 (#364)

Author: riragh

docs/CONFIG-VARS.md

@@ -359,7 +359,7 @@ Each server element, like `foo = {}`, can contain none, some, or all of the para
 | geo_redundant_backup_enabled | Enable Geo-redundant or not for server backup | bool | false | Not supported for the basic tier. |
 | administrator_login | The Administrator Login for the PostgreSQL Flexible Server. Changing this forces a new resource to be created. | string | "pgadmin" | The admin login name cannot be azure_superuser, azure_pg_admin, admin, administrator, root, guest, or public. It cannot start with pg_. See: [Microsoft Quickstart Server Database](https://docs.microsoft.com/en-us/azure/postgresql/flexible-server/quickstart-create-server-portal) |
 | administrator_password | The Password associated with the administrator_login for the PostgreSQL Flexible Server | string | "my$up3rS3cretPassw0rd" | The password must contain between 8 and 128 characters and must contain characters from three of the following categories: English uppercase letters, English lowercase letters, numbers (0 through 9), and non-alphanumeric characters (!, $, #, %, etc.). |
-| server_version | The version of the PostgreSQL Flexible server instance | string | "13" | Refer to the [SAS Viya Platform Administration Guide](https://documentation.sas.com/?cdcId=sasadmincdc&cdcVersion=default&docsetId=itopssr&docsetTarget=p05lfgkwib3zxbn1t6nyihexp12n.htm#p1wq8ouke3c6ixn1la636df9oa1u) for the supported versions of PostgreSQL for the SAS Viya platform. |
+| server_version | The version of the PostgreSQL Flexible server instance | string | "15" | Refer to the [SAS Viya Platform Administration Guide](https://documentation.sas.com/?cdcId=sasadmincdc&cdcVersion=default&docsetId=itopssr&docsetTarget=p05lfgkwib3zxbn1t6nyihexp12n.htm#p1wq8ouke3c6ixn1la636df9oa1u) for the supported versions of PostgreSQL for the SAS Viya platform. |
 | ssl_enforcement_enabled | Enforce SSL on connection to the Azure Database for PostgreSQL Flexible server instance | bool | true | |
 | connectivity_method | Network connectivity option to connect to your flexible server. There are two connectivity options available: Public access (allowed IP addresses) and Private access (VNet Integration). Defaults to public access with firewall rules enabled.| string | "public" | Valid options are `public` and `private`. See sample input file [here](../examples/sample-input-postgres.tfvars) and Private access documentation [here](./user/PostgreSQLPrivateAccess.md). For more details see [Networking overview](https://learn.microsoft.com/en-us/azure/postgresql/flexible-server/concepts-networking) |
 | postgresql_configurations | Sets a PostgreSQL Configuration value on a Azure PostgreSQL Flexible Server | list(object) | [] | More details can be found [here](https://docs.microsoft.com/en-us/azure/postgresql/flexible-server/howto-configure-server-parameters-using-cli) |

modules/azurerm_postgresql_flex/variables.tf

@@ -51,9 +51,9 @@ variable "administrator_password" {
 }
 
 variable "server_version" {
-  description = "Specifies the version of PostgreSQL to use. The version of PostgreSQL Flexible Server to use. Possible values are 11, 12 and 13. Changing this forces a new PostgreSQL Flexible Server to be created."
+  description = "Specifies the version of PostgreSQL to use. The version of PostgreSQL Flexible Server to use. Possible values are from 12 - 15. Changing this forces a new PostgreSQL Flexible Server to be created."
   type        = string
-  default     = "13"
+  default     = "15"
 }
 
 variable "connectivity_method" {

variables.tf

@@ -276,7 +276,7 @@ variable "postgres_server_defaults" {
     geo_redundant_backup_enabled = false
     administrator_login          = "pgadmin"
     administrator_password       = "my$up3rS3cretPassw0rd"
-    server_version               = "13"
+    server_version               = "15"
     ssl_enforcement_enabled      = true
     connectivity_method          = "public"
     postgresql_configurations    = []