Auto merge of #26916 - servo:dependabot/cargo/num_cpus-1.13.0, r=jdm

build(deps): bump num_cpus from 1.10.1 to 1.13.0

Bumps [num_cpus](https://github.com/seanmonstar/num_cpus) from 1.10.1 to 1.13.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/seanmonstar/num_cpus/releases">num_cpus's releases</a>.</em></p>
<blockquote>
<h2>v1.13.0</h2>
<h3>Features</h3>
<ul>
<li>add Linux cgroups support when calling <code>get()</code>.</li>
</ul>
<hr />
<p>Linux cgroups are a way to restrict the amount of resources a container can use. With this change, most libraries and applications deciding the number of threads to use via <code>num_cpus::get()</code> will spawn less threads, resulting in better usage of the CPU, and typically perform better.</p>
<p><img src="https://user-images.githubusercontent.com/145366/78310804-48a72080-754f-11ea-8ae5-61f97a979d8f.png" alt="image" /></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/seanmonstar/num_cpus/blob/master/CHANGELOG.md">num_cpus's changelog</a>.</em></p>
<blockquote>
<h2>v1.13.0</h2>
<h3>Features</h3>
<ul>
<li>add Linux cgroups support when calling <code>get()</code>.</li>
</ul>
<h2>v1.12.0</h2>
<h4>Fixes</h4>
<ul>
<li>fix <code>get</code> on OpenBSD to ignore offline CPUs</li>
<li>implement <code>get_physical</code> on OpenBSD</li>
</ul>
<h2>v1.11.1</h2>
<h4>Fixes</h4>
<ul>
<li>Use <code>mem::zeroed</code> instead of <code>mem::uninitialized</code>.</li>
</ul>
<h2>v1.11.0</h2>
<h4>Features</h4>
<ul>
<li>add <code>hermit</code> target OS support</li>
<li>removes <code>bitrig</code> support</li>
</ul>
<h4>Fixes</h4>
<ul>
<li>fix <code>get_physical</code> count with AMD hyperthreading.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="b347731fc0"><code>b347731</code></a> v1.13.0</li>
<li><a href="b676af138f"><code>b676af1</code></a> Add docker CI</li>
<li><a href="3a56d16215"><code>3a56d16</code></a> Add cgroups support for Linux targets</li>
<li><a href="bfce9402ba"><code>bfce940</code></a> Add MSRV to CI (<a href="https://github-redirect.dependabot.com/seanmonstar/num_cpus/issues/98">#98</a>)</li>
<li><a href="3eadfaa1e0"><code>3eadfaa</code></a> Remove un-supported macOS/iOS targets from CI (<a href="https://github-redirect.dependabot.com/seanmonstar/num_cpus/issues/97">#97</a>)</li>
<li><a href="ae4492e91b"><code>ae4492e</code></a> v1.12.0</li>
<li><a href="b94df797a1"><code>b94df79</code></a> Tweak OpenBSD cpu detection (<a href="https://github-redirect.dependabot.com/seanmonstar/num_cpus/issues/92">#92</a>)</li>
<li><a href="428811d2a0"><code>428811d</code></a> v1.11.1</li>
<li><a href="a24f544dc6"><code>a24f544</code></a> Replace <code>mem::uninitialized()</code> with <code>mem::zeroed()</code> (<a href="https://github-redirect.dependabot.com/seanmonstar/num_cpus/issues/83">#83</a>)</li>
<li><a href="1904840fa1"><code>1904840</code></a> v1.11.0</li>
<li>Additional commits viewable in <a href="https://github.com/seanmonstar/num_cpus/compare/v1.10.1...v1.13.0">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -2406,6 +2406,15 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9586eedd4ce6b3c498bc3b4dd92fc9f11166aa908a914071953768066c67909"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "hex"
 version = "0.3.2"
@@ -3709,10 +3718,11 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "1.10.1"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcef43580c035376c0705c42792c294b66974abbfd2789b511784023f71f3273"
+checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
 dependencies = [
+ "hermit-abi",
  "libc",
 ]