Merge #1017

1017: Bump toml from 0.5.8 to 0.5.9 r=delta1 a=dependabot[bot]

Bumps [toml](https://github.com/alexcrichton/toml-rs) from 0.5.8 to 0.5.9.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/alexcrichton/toml-rs/releases">toml's releases</a>.</em></p>
<blockquote>
<h2>0.5.9</h2>
<p>Changes:</p>
<ul>
<li><a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/373">#373</a>: Allow empty table keys</li>
<li><a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/426">#426</a>: Fix serialization of -0.0</li>
<li><a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/439">#439</a>: Make datetime structs and fields public</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="70caf40853"><code>70caf40</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/463">#463</a> from ehuss/version-bump</li>
<li><a href="63dd7f7fde"><code>63dd7f7</code></a> Bump to 0.5.9</li>
<li><a href="499e8c4bb3"><code>499e8c4</code></a> examples: Allow dead code (<a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/450">#450</a>)</li>
<li><a href="83d787c60d"><code>83d787c</code></a> Make datetime.rs structs and fields public <a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/431">#431</a> (<a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/439">#439</a>)</li>
<li><a href="d8a9a98cbb"><code>d8a9a98</code></a> Use entry api to remove a lookup in deserialisation loop (<a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/438">#438</a>)</li>
<li><a href="c2a069f5de"><code>c2a069f</code></a> Upgrade to GitHub-native Dependabot (<a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/427">#427</a>)</li>
<li><a href="a6420b64d5"><code>a6420b6</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/373">#373</a> from mgsloan/allow-empty-table-keys</li>
<li><a href="1928707496"><code>1928707</code></a> Fix serialization of -0.0. (<a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/426">#426</a>)</li>
<li><a href="b1417006df"><code>b141700</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/alexcrichton/toml-rs/issues/417">#417</a> from hone/patch-1</li>
<li><a href="a6e3d52f47"><code>a6e3d52</code></a> Fix comment typo</li>
<li>Additional commits viewable in <a href="https://github.com/alexcrichton/toml-rs/compare/0.5.8...0.5.9">compare view</a></li>
</ul>
</details>
<br />


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</details>

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Cargo.lock

@@ -4367,9 +4367,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.8"
+version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
 dependencies = [
  "serde",
 ]