Merge #3538

3538: Bump rand from 0.8.1 to 0.8.3 r=mergify[bot] a=dependabot[bot]

Bumps [rand](https://github.com/rust-random/rand) from 0.8.1 to 0.8.3.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/rust-random/rand/blob/master/CHANGELOG.md">rand's changelog</a>.</em></p>
<blockquote>
<h2>[0.8.3] - 2021-01-25</h2>
<h3>Fixes</h3>
<ul>
<li>Fix <code>no-std</code> + <code>alloc</code> build by gating <code>choose_multiple_weighted</code> on <code>std</code> (<a href="https://github.com/rust-random/rand/issues/1088">#1088</a>)</li>
</ul>
<h2>[0.8.2] - 2021-01-12</h2>
<h3>Fixes</h3>
<ul>
<li>Fix panic in <code>UniformInt::sample_single_inclusive</code> and <code>Rng::gen_range</code> when
providing a full integer range (eg <code>0..=MAX</code>) (<a href="https://github.com/rust-random/rand/issues/1087">#1087</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/rust-random/rand/commit/6ecbe2626b2cc6110a25c97b1702b347574febc7"><code>6ecbe26</code></a> Merge pull request <a href="https://github.com/rust-random/rand/issues/1089">#1089</a> from dhardy/work</li>
<li><a href="https://github.com/rust-random/rand/commit/8821743325303e4deb6c4a6c934f0e2eb9680205"><code>8821743</code></a> Prepare 0.8.3</li>
<li><a href="https://github.com/rust-random/rand/commit/fa615efd91f83fe8e56799cfa9217d67f7625fb7"><code>fa615ef</code></a> Feature gate choose_multiple_weighted on std</li>
<li><a href="https://github.com/rust-random/rand/commit/22dec87aac43e0e92eb15fa85b2de6da5b3c95b7"><code>22dec87</code></a> CI: more accurate no-default-feature and nightly test targets</li>
<li><a href="https://github.com/rust-random/rand/commit/6a6b9fd06dbf54538d250dfbc4c918f79daa9299"><code>6a6b9fd</code></a> Merge pull request <a href="https://github.com/rust-random/rand/issues/1087">#1087</a> from GautierMinster/fix_uniform_int_panic_on_full_in...</li>
<li><a href="https://github.com/rust-random/rand/commit/2c9085a2de8864ee327af0311f6a8e5747cf25b7"><code>2c9085a</code></a> Bump to 0.8.2 and update changelog</li>
<li><a href="https://github.com/rust-random/rand/commit/4e8c7a4ca2963797d0ec414d04b6239ece905165"><code>4e8c7a4</code></a> distributions/uniform: fix panic in gen_range(0..=MAX)</li>
<li>See full diff in <a href="https://github.com/rust-random/rand/compare/0.8.1...0.8.3">compare view</a></li>
</ul>
</details>
<br />


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