Changes to List connector instances

added the optional property message to the response with the 400 status

the endpoint scheme security bearerAuth was added to the API

the endpoint scheme security denApiKey was added to the API

added the optional property capability to the response with the 400 status

removed the pattern ^cac_.* from the query request parameter connectorAccountId

removed the pattern ^plg_.* from the query request parameter pluginId

the items/items/connectorAccountId response's property pattern ^cac_.* was removed for the status 200

the items/items/createdByOrgMembershipId response's property pattern ^om_.* was removed for the status 200

the items/items/id response's property pattern ^cin_.* was removed for the status 200

the items/items/organizationId response's property pattern ^org_.* was removed for the status 200