fix(deps): update dependency @octokit/rest to v20

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@octokit/rest	^19.0.7 -> ^20.0.0

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Release Notes

octokit/rest.js (@​octokit/rest)

v20.0.1

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Bug Fixes

• deps: update dependency @​octokit/plugin-request-log to v4 (#​322) (688f86a)

v20.0.0

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Features

• v20 (#​305) (5429dfd)

BREAKING CHANGES

• Drop support for NodeJS v14, v16
• Remove previews support for the REST API
• remove agent option from octokit.request()

v19.0.13

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Bug Fixes

• deps: revert breaking dependency changes (#​320) (f02bfd5), closes #​318

v19.0.12

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Bug Fixes

• deps: update dependency @​octokit/plugin-paginate-rest to v7 (#​316) (a860845)

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