fix(GroupProfile): restore custom group-profile attribute extensibility

GroupProfile lost its extensibility after 6.6.0 (#365): because it is not marked
x-okta-extensible, ObjectSerializer strips custom group-profile attributes (those
added via the Schemas API, e.g. an org-chart id) on both serialize and
deserialize, so they never reach Okta on writes and are dropped on reads.

Add GroupProfile to the force-extensible list in scripts/fixSpec.cjs — matching
UserProfile and OktaUserGroupProfile, which remain extensible — and regenerate.
This restores the typed index signature and `static readonly isExtensible = true`
so custom attributes round-trip again.

Refs #238, okta/okta-sdk-java#1642.

Author: eleonoratennyson

scripts/fixSpec.cjs

@@ -505,6 +505,7 @@ function fixExtensibleSchemas(spec) {
   // Schemas to add `x-okta-extensible`
   const schemasToForceExtensible = [
     'UserProfile',
+    'GroupProfile',
   ];
 
   for (const schemaKey in spec.components.schemas) {

src/generated/models/GroupProfile.js

@@ -75,3 +75,4 @@ GroupProfile.attributeTypeMap = [
     'format': ''
   }
 ];
+GroupProfile.isExtensible = true;