fix(deps): update dependency octokit to v4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
octokit	^3.1.2 -> ^4.0.0

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Release Notes

octokit/octokit.js (octokit)

### [`v4.0.1`](https://togithub.com/octokit/octokit.js/releases/tag/v4.0.1) [Compare Source](https://togithub.com/octokit/octokit.js/compare/v4.0.0...v4.0.1) ##### Bug Fixes - **docs:** remove NodeJS 10 and add callout for conditional exports ([#​2675](https://togithub.com/octokit/octokit.js/issues/2675)) ([c99ff62](https://togithub.com/octokit/octokit.js/commit/c99ff62ea2661453bfa94ccd6338061a83b7f280)) ### [`v4.0.0`](https://togithub.com/octokit/octokit.js/releases/tag/v4.0.0) [Compare Source](https://togithub.com/octokit/octokit.js/compare/v3.2.1...v4.0.0) ##### BREAKING CHANGES - package is now ESM - remove authentication type "oauth" that was previously deprecated - Switch from `@octokit/webhooks-types` to `@octokit/openapi-webhooks-types` due to the transition to using GitHub's OpenAPI schema

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