chore(deps): update dependency sass to v1.81.0 (#1435)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [sass](https://redirect.github.com/sass/dart-sass) | [`1.80.6` ->
`1.81.0`](https://renovatebot.com/diffs/npm/sass/1.80.6/1.81.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/sass/1.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/sass/1.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/sass/1.80.6/1.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/sass/1.80.6/1.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>sass/dart-sass (sass)</summary>

###
[`v1.81.0`](https://redirect.github.com/sass/dart-sass/blob/HEAD/CHANGELOG.md#1810)

[Compare
Source](https://redirect.github.com/sass/dart-sass/compare/1.80.7...1.81.0)

- 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`](https://redirect.github.com/sass/dart-sass/blob/HEAD/CHANGELOG.md#1807)

[Compare
Source](https://redirect.github.com/sass/dart-sass/compare/1.80.6...1.80.7)

##### Embedded Host

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

</details>

---

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---

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