Update dependency sass to v1.81.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass	1.80.6 -> 1.81.0

---

Release Notes

sass/dart-sass (sass)

v1.81.0

Compare Source

• Fix a few cases where deprecation warnings weren't being emitted for global
  built-in functions whose names overlap with CSS calculations.

• Add support for the CSS round() calculation with a single argument, as long
  as that argument might be a unitless number.

v1.80.7

Compare Source

Embedded Host

• Don't treat 0 as undefined for the green and blue channels in the
  LegacyColor constructor.

---

Configuration

📅 Schedule: Branch creation - "after 8am on Monday" (UTC), Automerge - At any time (no schedule defined).

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

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

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

---

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

---

This PR was generated by Mend Renovate. View the repository job log.