Update code so that deprecation warnings go away

[jleach]

Describe the issue

Make necessary code changes so that all deprecation warnings are removed.

Additional context

{ Deprecation: [@octokit/request-error] `error.code` is deprecated, use `error.status`.
    at RequestError.get (/opt/app-root/src/node_modules/@octokit/request-error/dist-node/index.js:29:17)
    at Object.exports.isOrgMember (/opt/app-root/src/build/libs/ghutils.js:354:17) name: 'Deprecation' }
22:56:21.229Z  INFO http: POST / 200 - 437.02 ms (id=xxxxx)
22:56:23.145Z DEBUG github: GitHub request: GET /search/issues - undefined (installation=xxxxx)

Definition of done

When the bot operates no deprecation warnings should appear in the logs.