fix(deps): update octokit monorepo (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@octokit/openapi	^20.0.0 -> ^21.0.0
@octokit/openapi-types (source)	^26.0.0 -> ^27.0.0

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Release Notes

octokit/openapi (@​octokit/openapi)

v21.0.0

Compare Source

Features

• add GHES 3.18, immutable releases, enterprise team membership, enterprise team organization, custom runner images, many type additions and improvements (#​506) (9a9939d)

BREAKING CHANGES

• Several endpoints ID change
• Removed endpoints

octokit/openapi-types.ts (@​octokit/openapi-types)

v27.0.0

Compare Source

Features

• add GHES 3.18, immutable releases, enterprise team membership, enterprise team organization, custom runner images, many type additions and improvements (#​479) (1e600e2)

BREAKING CHANGES

• Several endpoints ID change
• Removed endpoints

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