Auto merge of #29336 - servo:dependabot/cargo/spin-0.9.5, r=jdm

Bump spin from 0.9.4 to 0.9.5

Bumps [spin](https://github.com/mvdnes/spin-rs) from 0.9.4 to 0.9.5.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/mvdnes/spin-rs/blob/master/CHANGELOG.md">spin's changelog</a>.</em></p>
<blockquote>
<h1>[0.9.5] - 2023-02-07</h1>
<h3>Added</h3>
<ul>
<li><code>FairMutex</code>, a new mutex implementation that reduces writer starvation.</li>
<li>A MSRV policy: Rust 1.38 is currently required</li>
</ul>
<h3>Changed</h3>
<ul>
<li>The crate's CI now has full MIRI integration, further improving the confidence you can have in the implementation.</li>
</ul>
<h3>Fixed</h3>
<ul>
<li>Ensured that the crate's abstractions comply with stacked borrows rules.</li>
<li>Unsoundness in the <code>RwLock</code> that could be triggered via a reader overflow</li>
<li>Relaxed various <code>Send</code>/<code>Sync</code> bound requirements to make the crate more flexible</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a href="https://github.com/mvdnes/spin-rs/commits">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -6198,9 +6198,9 @@ checksum = "b72d540d5c565dbe1f891d7e21ceb21d2649508306782f1066989fccb0b363d3"
 
 [[package]]
 name = "spin"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f6002a767bff9e83f8eeecf883ecb8011875a21ae8da43bffb817a57e78cc09"
+checksum = "7dccf47db1b41fa1573ed27ccf5e08e3ca771cb994f776668c5ebda893b248fc"
 dependencies = [
  "lock_api 0.4.7",
 ]