Auto merge of #27853 - servo:dependabot/cargo/memchr-2.3.4, r=jdm

Bump memchr from 2.3.3 to 2.3.4

Bumps [memchr](https://github.com/BurntSushi/rust-memchr) from 2.3.3 to 2.3.4.
<details>
<summary>Commits</summary>
<ul>
<li><a href="d6b8186692"><code>d6b8186</code></a> 2.3.4</li>
<li><a href="3f9b977281"><code>3f9b977</code></a> build: only enable simd on targets which feature SSE</li>
<li><a href="153e3afb17"><code>153e3af</code></a> ci: add build for non-SSE target</li>
<li><a href="10f11fbeaa"><code>10f11fb</code></a> bench: run libc benchmarks on non-x86 environments</li>
<li>See full diff in <a href="https://github.com/BurntSushi/rust-memchr/compare/2.3.3...2.3.4">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -3592,9 +3592,9 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.3.3"
+version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
+checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
 
 [[package]]
 name = "memmap"