RFR: 8375065: Update LCMS to 2.18 [v2]

[Sergey Bylokhov]

On Thu, 5 Feb 2026 20:27:27 GMT, Damon Nguyen <dnguyen at openjdk.org> wrote:

>> Upgrade Little Color Management System to latest version (2.18).
>
> Damon Nguyen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove redundancy

Marked as reviewed by serb (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29592#pullrequestreview-3765829750