CodeGen from PR 22355 in Azure/azure-rest-api-specs

{AzurePostgresql} fixes Azure/azure-rest-api-specs#22302 fix the regex for serverName property (#22355)

* {AzurePostgresql} fixes Azure/azure-rest-api-specs#22302 fix the regex for serverName property

fixes Azure/azure-rest-api-specs#22302 

PR to fix the regex for serverName property

As per [this](https://learn.microsoft.com/en-us/azure/postgresql/single-server/tutorial-design-database-using-azure-portal#create-an-azure-database-for-postgresql) docs, the Postgresql Server Name should have the below pattern:
-Server name must be at least 3 characters and at most 63 characters.
-Server name must only contain lowercase letters, numbers, and hyphens. The server name must not start or end in a hyphen.
-Server name must be available.

Current Regex is incorrect: `^[a-z][a-z0-9]*$` as it doesn't allow the hyphen. The correct Regex pattern should be `^[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*`

* Update common-types.json

Author: SDKAuto

schemas/2022-03-08-preview/Microsoft.DBforPostgreSQL.json

@@ -32,7 +32,7 @@
           "oneOf": [
             {
               "type": "string",
-              "pattern": "^[a-z][a-z0-9]*$",
+              "pattern": "^[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*",
               "minLength": 3,
               "maxLength": 63
             },

schemas/2022-12-01/Microsoft.DBforPostgreSQL.json

@@ -32,7 +32,7 @@
           "oneOf": [
             {
               "type": "string",
-              "pattern": "^[a-z][a-z0-9]*$",
+              "pattern": "^[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*",
               "minLength": 3,
               "maxLength": 63
             },