convert databaseVersion enum to string (#12687) (#20859)

[upstream:e2df63b0bcdf8f7067f0d6de291815c37815d9c7]

Signed-off-by: Modular Magician <magic-modules@google.com>

Author: modular-magician

.changelog/12687.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+sql: `sql_source_representation_instance` now uses `string` representation of `databaseVersion`
+```

google/services/sql/resource_sql_source_representation_instance.go

@@ -32,7 +32,6 @@ import (
 
 	"github.com/hashicorp/terraform-provider-google/google/tpgresource"
 	transport_tpg "github.com/hashicorp/terraform-provider-google/google/transport"
-	"github.com/hashicorp/terraform-provider-google/google/verify"
 
 	"google.golang.org/api/googleapi"
 )
@@ -58,11 +57,10 @@ func ResourceSQLSourceRepresentationInstance() *schema.Resource {
 
 		Schema: map[string]*schema.Schema{
 			"database_version": {
-				Type:         schema.TypeString,
-				Required:     true,
-				ForceNew:     true,
-				ValidateFunc: verify.ValidateEnum([]string{"MYSQL_5_6", "MYSQL_5_7", "MYSQL_8_0", "POSTGRES_9_6", "POSTGRES_10", "POSTGRES_11", "POSTGRES_12", "POSTGRES_13", "POSTGRES_14"}),
-				Description:  `The MySQL version running on your source database server. Possible values: ["MYSQL_5_6", "MYSQL_5_7", "MYSQL_8_0", "POSTGRES_9_6", "POSTGRES_10", "POSTGRES_11", "POSTGRES_12", "POSTGRES_13", "POSTGRES_14"]`,
+				Type:        schema.TypeString,
+				Required:    true,
+				ForceNew:    true,
+				Description: `The MySQL, PostgreSQL or SQL Server (beta) version to use. Supported values include MYSQL_5_6, MYSQL_5_7, MYSQL_8_0, MYSQL_8_4, POSTGRES_9_6, POSTGRES_10, POSTGRES_11, POSTGRES_12, POSTGRES_13, POSTGRES_14, POSTGRES_15, POSTGRES_16, POSTGRES_17. Database Version Policies includes an up-to-date reference of supported versions.`,
 			},
 			"name": {
 				Type:        schema.TypeString,

website/docs/r/sql_source_representation_instance.html.markdown

@@ -84,8 +84,7 @@ The following arguments are supported:
 
 * `database_version` -
   (Required)
-  The MySQL version running on your source database server.
-  Possible values are: `MYSQL_5_6`, `MYSQL_5_7`, `MYSQL_8_0`, `POSTGRES_9_6`, `POSTGRES_10`, `POSTGRES_11`, `POSTGRES_12`, `POSTGRES_13`, `POSTGRES_14`.
+  The MySQL, PostgreSQL or SQL Server (beta) version to use. Supported values include MYSQL_5_6, MYSQL_5_7, MYSQL_8_0, MYSQL_8_4, POSTGRES_9_6, POSTGRES_10, POSTGRES_11, POSTGRES_12, POSTGRES_13, POSTGRES_14, POSTGRES_15, POSTGRES_16, POSTGRES_17. Database Version Policies includes an up-to-date reference of supported versions.
 
 * `host` -
   (Required)