Auto merge of #26560 - servo:dependabot/cargo/histogram-0.6.9, r=jdm

Bump histogram from 0.6.8 to 0.6.9

Bumps [histogram](https://github.com/brayniac/histogram) from 0.6.8 to 0.6.9.
<details>
<summary>Commits</summary>
<ul>
<li><a href="c13464de1f"><code>c13464d</code></a> (cargo-release) version 0.6.9</li>
<li><a href="a4788512bb"><code>a478851</code></a> Increase range to include zero (<a href="https://github-redirect.dependabot.com/brayniac/histogram/issues/49">#49</a>)</li>
<li><a href="a9b90d8f3e"><code>a9b90d8</code></a> ci: fix rustfmt on travis (<a href="https://github-redirect.dependabot.com/brayniac/histogram/issues/47">#47</a>)</li>
<li><a href="6312c757c6"><code>6312c75</code></a> (cargo-release) start next development iteration 0.6.9-pre</li>
<li>See full diff in <a href="https://github.com/brayniac/histogram/compare/0.6.8...0.6.9">compare view</a></li>
</ul>
</details>
<br />

[![Dependabot compatibility score](https://api.dependabot.com/badges/compatibility_score?dependency-name=histogram&package-manager=cargo&previous-version=0.6.8&new-version=0.6.9)](https://dependabot.com/compatibility-score/?dependency-name=histogram&package-manager=cargo&previous-version=0.6.8&new-version=0.6.9)

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Cargo.lock

@@ -2463,9 +2463,9 @@ dependencies = [
 
 [[package]]
 name = "histogram"
-version = "0.6.8"
+version = "0.6.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bdcec4094c1ca961b685384ea7af76af5718230b3f34657d1a71fd2dcf4cc9d"
+checksum = "12cb882ccb290b8646e554b157ab0b71e64e8d5bef775cd66b6531e52d302669"
 
 [[package]]
 name = "html5ever"