Auto merge of #28457 - servo:dependabot/cargo/rayon-core-1.9.1, r=jdm

Bump rayon-core from 1.9.0 to 1.9.1

Bumps [rayon-core](https://github.com/rayon-rs/rayon) from 1.9.0 to 1.9.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/rayon-rs/rayon/blob/master/RELEASES.md">rayon-core's changelog</a>.</em></p>
<blockquote>
<h1>Release rayon 1.5.1 / rayon-core 1.9.1 (2021-05-18)</h1>
<ul>
<li>The new <code>in_place_scope</code> and <code>in_place_scope_fifo</code> are variations of <code>scope</code>
and <code>scope_fifo</code>, running the initial non-<code>Send</code> callback directly on the
current thread, rather than moving execution to the thread pool.</li>
<li>With Rust 1.51 or later, arrays now implement <code>IntoParallelIterator</code>.</li>
<li>New implementations of <code>FromParallelIterator</code> make it possible to <code>collect</code>
complicated nestings of items.
<ul>
<li><code>FromParallelIterator&lt;(A, B)&gt; for (FromA, FromB)</code> works like <code>unzip</code>.</li>
<li><code>FromParallelIterator&lt;Either&lt;L, R&gt;&gt; for (A, B)</code> works like <code>partition_map</code>.</li>
</ul>
</li>
<li>Type inference now works better with parallel <code>Range</code> and <code>RangeInclusive</code>.</li>
<li>The implementation of <code>FromParallelIterator</code> and <code>ParallelExtend</code> for
<code>Vec&lt;T&gt;</code> now uses <code>MaybeUninit&lt;T&gt;</code> internally to avoid creating any
references to uninitialized data.</li>
<li><code>ParallelBridge</code> fixed a bug with threads missing available work.</li>
</ul>
<h2>Contributors</h2>
<p>Thanks to all of the contributors for this release!</p>
<ul>
<li><a href="https://github.com/atouchet"><code>@​atouchet</code></a></li>
<li><a href="https://github.com/cuviper"><code>@​cuviper</code></a></li>
<li><a href="https://github.com/Hywan"><code>@​Hywan</code></a></li>
<li><a href="https://github.com/iRaiko"><code>@​iRaiko</code></a></li>
<li><a href="https://github.com/Qwaz"><code>@​Qwaz</code></a></li>
<li><a href="https://github.com/rocallahan"><code>@​rocallahan</code></a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="ebcb09b1dc"><code>ebcb09b</code></a> adjust the latest release date</li>
<li><a href="93d909195b"><code>93d9091</code></a> Merge <a href="https://github-redirect.dependabot.com/rayon-rs/rayon/issues/860">#860</a></li>
<li><a href="dbc026b5a8"><code>dbc026b</code></a> Release rayon 1.5.1 / rayon-core 1.9.1</li>
<li><a href="87aae49598"><code>87aae49</code></a> Merge <a href="https://github-redirect.dependabot.com/rayon-rs/rayon/issues/859">#859</a></li>
<li><a href="2e13d8909f"><code>2e13d89</code></a> Update demo dependencies</li>
<li><a href="3c7489e168"><code>3c7489e</code></a> Merge <a href="https://github-redirect.dependabot.com/rayon-rs/rayon/issues/855">#855</a></li>
<li><a href="0bd4ec6cea"><code>0bd4ec6</code></a> Add <code>in_place_scope_fifo</code></li>
<li><a href="6a01573a18"><code>6a01573</code></a> Merge <a href="https://github-redirect.dependabot.com/rayon-rs/rayon/issues/844">#844</a></li>
<li><a href="8815e26cf6"><code>8815e26</code></a> Implement in_place_scope: a scope that runs its driver closure on the same th...</li>
<li><a href="aacced8826"><code>aacced8</code></a> Merge <a href="https://github-redirect.dependabot.com/rayon-rs/rayon/issues/852">#852</a></li>
<li>Additional commits viewable in <a href="https://github.com/rayon-rs/rayon/compare/rayon-core-v1.9.0...rayon-core-v1.9.1">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -4895,9 +4895,9 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.9.0"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ab346ac5921dc62ffa9f89b7a773907511cdfa5490c572ae9be1be33e8afa4a"
+checksum = "d78120e2c850279833f1dd3582f730c4ab53ed95aeaaaa862a2a5c71b1656d8e"
 dependencies = [
  "crossbeam-channel 0.5.0",
  "crossbeam-deque 0.8.0",