Missed inclusion of principalID for SystemAssigned type (Azure#32330)

Author: nasc17

specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2024-11-01-preview/FlexibleServers.json

@@ -1048,6 +1048,10 @@
           "$ref": "#/definitions/UserAssignedIdentityMap",
           "description": "represents user assigned identities map."
         },
+        "principalId": {
+          "type": "string",
+          "description": "the identity principal Id of the server."
+        },
         "type": {
           "type": "string",
           "description": "the types of identities associated with this resource",

specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/stable/2024-08-01/FlexibleServers.json

@@ -1023,6 +1023,10 @@
           "$ref": "#/definitions/UserAssignedIdentityMap",
           "description": "represents user assigned identities map."
         },
+        "principalId": {
+          "type": "string",
+          "description": "the identity principal Id of the server."
+        },
         "type": {
           "type": "string",
           "description": "the types of identities associated with this resource; currently restricted to 'None and UserAssigned'",