GHSA-X36R-4347-PM5X swagger-typescript-api vulnerable to Server-Side Request Forgery via spec `$ref`

Summary swagger-typescript-api walks every $ref value in the input OpenAPI spec and, for any $ref whose target is an https:// URL, issues an HTTP GET to that URL during generation warmUpRemoteSchemasCache. The only URL filter is a regex that matches ^https?:// — there is no private-IP allowlist, ...