Changes to Update webhook endpoint

changed the pattern of the path request parameter webhook_endpoint_id from ^whe_[a-zA-Z0-9]{14}$ to ^[Ww][Hh][Ee]_[a-zA-Z0-9]{14}$

changed the pattern of the request property folder_ids/items from ^fol_[a-zA-Z0-9]{14}$ to ^[Ff][Oo][Ll]_[a-zA-Z0-9]{14}$

removed the enum value note.regenerated of the request property events/items

removed the note.regenerated enum value from the events/items response property for the response status 200

the response property created_by/allOf[subschema #2] became nullable for the status 200

the created_by/allOf[subschema #2] response's property type changed from no type to object null for status 200

added the new workspace enum value to the scopes/items response property for the response status 200

added the new workspace enum value to the request property scopes/items

endpoint added