chore(deps): update commitlint monorepo to v15 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@commitlint/cli (source)	^14.1.0 -> ^15.0.0
@commitlint/config-conventional (source)	^14.1.0 -> ^15.0.0

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Release Notes

conventional-changelog/commitlint

### [`v15.0.0`](https://togithub.com/conventional-changelog/commitlint/blob/master/@​commitlint/config-conventional/CHANGELOG.md#​1500-httpsgithubcomconventional-changelogcommitlintcomparev1420v1500-2021-11-17) [Compare Source](https://togithub.com/conventional-changelog/commitlint/compare/v14.1.0...v15.0.0) **Note:** Version bump only for package [@​commitlint/config-conventional](https://togithub.com/commitlint/config-conventional)

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Configuration

📅 Schedule: "before 12pm on Sunday" (UTC).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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