chore: update commitlint monorepo to ^18.6.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@commitlint/config-conventional (source)	^18.5.0 -> ^18.6.0
commitlint (source)	^18.5.0 -> ^18.6.0

---

Release Notes

conventional-changelog/commitlint (@​commitlint/config-conventional)

v18.6.0

Compare Source

Features

• rules: add header-trim rule (#​3199) (#​3871) (331579a)

conventional-changelog/commitlint (commitlint)

v18.6.0

Compare Source

Note: Version bump only for package commitlint

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

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

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

[coveralls]

Pull Request Test Coverage Report for Build 7655346850

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 59.314%

---

Totals
Change from base Build 7611108165:	0.0%
Covered Lines:	713
Relevant Lines:	1133

---

💛 - Coveralls