Bump sass from 1.83.4 to 1.84.0 (plfa#1094)

Bumps [sass](https://github.com/sass/dart-sass) from 1.83.4 to 1.84.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/sass/dart-sass/blob/main/CHANGELOG.md">sass's
changelog</a>.</em></p>
<blockquote>
<h2>1.84.0</h2>
<ul>
<li>
<p>Allow newlines in whitespace in the indented syntax.</p>
</li>
<li>
<p><strong>Potentially breaking bug fix</strong>: Selectors with
unmatched brackets now always
produce a parser error. Previously, some edge cases like
<code>[foo#{&quot;]:is(bar&quot;}) {a: b}</code> would compile without
error, but this was an unintentional bug.</p>
</li>
<li>
<p>Fix a bug in which various Color Level 4 functions weren't allowed in
plain
CSS.</p>
</li>
<li>
<p>Fix the error message for <code>@extend</code> without a selector and
possibly other
parsing edge-cases in contexts that allow interpolation.</p>
</li>
</ul>
<h3>Embedded Host</h3>
<ul>
<li>Fixed the implementation of the <code>SassBoolean</code> type to
adhere to the spec,
now using a class instead of an interface.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/sass/dart-sass/commit/ae4b757e5889166e7a716d8015e8b0baf6540fb9"><code>ae4b757</code></a>
[Indented syntax improvements] Dart implementation (<a
href="https://redirect.github.com/sass/dart-sass/issues/2467">#2467</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/d973e3eaf3f976d06de479b1eee3c281449ba07f"><code>d973e3e</code></a>
Allow Color 4 functions in plain CSS (<a
href="https://redirect.github.com/sass/dart-sass/issues/2505">#2505</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/aed783938ff422d82e452b6fbfcd56ccea693ffb"><code>aed7839</code></a>
Add support for the <code>@content</code> rule (<a
href="https://redirect.github.com/sass/dart-sass/issues/2501">#2501</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/3b46880c9d25da0c36f202552b8aeda6f96affcd"><code>3b46880</code></a>
Add changelog for embedded host fix (<a
href="https://redirect.github.com/sass/dart-sass/issues/2500">#2500</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/2cedc62a9c04c370ba6b76b2d5bcd245f6c8c5ed"><code>2cedc62</code></a>
Add support for <code>@import</code> (<a
href="https://redirect.github.com/sass/dart-sass/issues/2498">#2498</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/f4908e78792d4b37c418e218c2fde9d812fa0b3b"><code>f4908e7</code></a>
Fix a crash when writing <code>@extend</code> without a selector (<a
href="https://redirect.github.com/sass/dart-sass/issues/2499">#2499</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/870ba061a3d0a1bbcf95eae71e29610a512b5915"><code>870ba06</code></a>
Bump bufbuild/buf-setup-action in /.github/util/initialize (<a
href="https://redirect.github.com/sass/dart-sass/issues/2495">#2495</a>)</li>
<li><a
href="https://github.com/sass/dart-sass/commit/aba11b86d5d390a4261dfbe96f179bf9a5203b93"><code>aba11b8</code></a>
Bump postcss from 8.4.49 to 8.5.1 in /pkg/sass-parser (<a
href="https://redirect.github.com/sass/dart-sass/issues/2496">#2496</a>)</li>
<li>See full diff in <a
href="https://github.com/sass/dart-sass/compare/1.83.4...1.84.0">compare
view</a></li>
</ul>
</details>
<br />

<details>
<summary>Most Recent Ignore Conditions Applied to This Pull
Request</summary>

| Dependency Name | Ignore Conditions |
| --- | --- |
| sass | [< 1.55, > 1.54.0] |
</details>


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package-lock.json

@@ -3,6 +3,6 @@
     "browser-sync": "^3.0.3",
     "html-validate": "^8.11.1",
     "html-minifier": "^4.0.0",
-    "sass": "^1.83.4"
+    "sass": "^1.84.0"
   }
 }