[Security] security warning for superagent during builds

[eatyourgreens]

Building PFE generates the following security warning in the build output (during the npm ci step.)

[email protected]: Please upgrade to v9.0.0+ as we have fixed a public vulnerability with formidable dependency. Note that v9.0.0+ requires Node.js v14.18.0+. See https://github.com/ladjs/superagent/pull/1800 for insight. This project is supported and maintained by the team at Forward Email @ https://forwardemail.net

Superagent probably needs to be upgraded in the API client, rather than directly in PFE. See https://github.com/zooniverse/panoptes-javascript-client/pull/243.