build: quash octokit deprecation warning(s)

[codebytere]

Description of Change

Update octokit to remove the following deprection warning:

Deprecation: [@octokit/rest] new Octokit({headers}) is deprecated. Use {userAgent, previews} instead. See https://github.com/octokit/request.js#request

cc @MarshallOfSound @jkleinsc

Checklist

• PR description included and stakeholders cc'd
• npm test passes
• PR title follows semantic commit guidelines
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.
• This is NOT A BREAKING CHANGE. Breaking changes may not be merged to master until 11-x-y is branched.

Release Notes

Notes: none

[jkleinsc]

Merging as WOA error is a known issue unrelated to this PR.

[release-clerk]

No Release Notes