Auto merge of #26617 - servo:dependabot/cargo/socket2-0.3.12, r=jdm

Bump socket2 from 0.3.5 to 0.3.12

Bumps [socket2](https://github.com/alexcrichton/socket2-rs) from 0.3.5 to 0.3.12.
<details>
<summary>Commits</summary>
<ul>
<li><a href="c22d0e55c4"><code>c22d0e5</code></a> Bump to 0.3.12</li>
<li><a href="4206876f23"><code>4206876</code></a> Implement fmt::Debug for Domain, Protocol and Type (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/63">#63</a>)</li>
<li><a href="1d66f9fb57"><code>1d66f9f</code></a> Move Protocol impl to src/lib.rs (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/61">#61</a>)</li>
<li><a href="8cf72802a1"><code>8cf7280</code></a> Move socket and SocketAddr (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/62">#62</a>)</li>
<li><a href="7dd551fe8e"><code>7dd551f</code></a> Always use C's int type (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/60">#60</a>)</li>
<li><a href="085762e090"><code>085762e</code></a> Move Type impl where its defined (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/59">#59</a>)</li>
<li><a href="3de176f2c8"><code>3de176f</code></a> Move Domain (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/57">#57</a>)</li>
<li><a href="536121a6e0"><code>536121a</code></a> Replace mem::uninitialized with MaybeUninit (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/55">#55</a>)</li>
<li><a href="850ad9078f"><code>850ad90</code></a> Use Once::new on Windows (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/58">#58</a>)</li>
<li><a href="230d413459"><code>230d413</code></a> Add support for illumos target (<a href="https://github-redirect.dependabot.com/alexcrichton/socket2-rs/issues/54">#54</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/alexcrichton/socket2-rs/compare/0.3.5...0.3.12">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -5439,12 +5439,13 @@ dependencies = [
 
 [[package]]
 name = "socket2"
-version = "0.3.5"
+version = "0.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff606e0486e88f5fc6cfeb3966e434fb409abbc7a3ab495238f70a1ca97f789d"
+checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
 dependencies = [
  "cfg-if",
  "libc",
+ "redox_syscall",
  "winapi",
 ]