Changes to Import immutable skills.

the skills/items response property's maxLength was increased from 32 to 63 for the response status 200

the skills/items response's property pattern was changed from ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$ to ^[a-z0-9]+(-[a-z0-9]+)*$ for the status 200

the decisions request property's minLength was increased from 0 to 2

the decisions request property's maxLength was set to 65536

removed the request property kind

api operation id importSkills removed and replaced with importImmutableSkills

the endpoint scheme security GatewayBearer was added to the API

added the new optional header request parameter X-AgentZ-Workspace-ID

the decisions request property type was generalized from array to string

added the non-success response with the status 415

added the non-success response with the status 422

endpoint added