Fix function-no-unknown light-dark false positive

[mattxwang]

Which issue, if any, is this issue related to?

Closes #7226.

Is there anything in the PR that needs further explanation?

No, it's self-explanatory.

[changeset-bot]

🦋 Changeset detected

Latest commit: efab507

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
stylelint	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[Mouvedia]

niksy/css-functions-list@fec2bfe

css-functions-list has released a new version

[mattxwang]

Oh, good eye!

Should I make a PR updating the dep here, or update the dep itself (and treat this "bugfix" as a side effect)? Not sure how this normally works re: dep updates.

Also, webkit-gradient has also been added.

[Mouvedia]

@mattxwang there's a bot that adds dependencies. Is there a way to trigger it?
The way to do it is to add a commit to that automatically created PR.

[ybiquitous]

Ya, we can manually trigger Dependabot, or update PRs will come weekly on Monday.

[mattxwang]

Gotcha. I think I meant more, how do we want this to be reflected in the changeset/changelog: is the dep update accompanied by fixing this false positive? i.e. am I adding the changeset to the PR?

(also, I'll add the test case to the dependabot PR)

[Mouvedia]

@mattxwang

Fixed: `function-no-unknown` false positives for `light-dark`, `linear` and `xywh`

am I adding the changeset to the PR?

Yup.