build(deps): bump hashbrown from 0.15.5 to 0.16.0 (#2084)

Bumps [hashbrown](https://github.com/rust-lang/hashbrown) from 0.15.5 to
0.16.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/rust-lang/hashbrown/releases">hashbrown's
releases</a>.</em></p>
<blockquote>
<h2>v0.16.0</h2>
<h3>Changed</h3>
<ul>
<li>Bump foldhash, the default hasher, to 0.2.0.</li>
<li>Replaced <code>DefaultHashBuilder</code> with a newtype wrapper
around <code>foldhash</code> instead of re-exporting it directly.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rust-lang/hashbrown/blob/master/CHANGELOG.md">hashbrown's
changelog</a>.</em></p>
<blockquote>
<h2><a
href="https://github.com/rust-lang/hashbrown/compare/v0.15.5...v0.16.0">0.16.0</a>
- 2025-08-28</h2>
<h3>Changed</h3>
<ul>
<li>Bump foldhash, the default hasher, to 0.2.0.</li>
<li>Replaced <code>DefaultHashBuilder</code> with a newtype wrapper
around <code>foldhash</code> instead
of re-exporting it directly.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="8d4def0edc"><code>8d4def0</code></a>
Merge pull request <a
href="https://redirect.github.com/rust-lang/hashbrown/issues/643">#643</a>
from cuviper/newtype-hasher</li>
<li><a
href="e0f404cc0b"><code>e0f404c</code></a>
use <code>feature(hasher_prefixfree_extras)</code></li>
<li><a
href="95ffed34ed"><code>95ffed3</code></a>
Change <code>DefaultHashBuilder</code> to an opaque newtype</li>
<li><a
href="bf35a11329"><code>bf35a11</code></a>
Merge pull request <a
href="https://redirect.github.com/rust-lang/hashbrown/issues/641">#641</a>
from hoxxep/foldhash-0.2</li>
<li><a
href="e2a634b37f"><code>e2a634b</code></a>
Merge pull request <a
href="https://redirect.github.com/rust-lang/hashbrown/issues/642">#642</a>
from heiher/loong-simd-types</li>
<li><a
href="88794e7fc5"><code>88794e7</code></a>
loongarch64: Use unified data types for SIMD intrinsics</li>
<li><a
href="b22dd85cc3"><code>b22dd85</code></a>
perf: Bump foldhash to 0.2.0</li>
<li><a
href="fe72a08e63"><code>fe72a08</code></a>
Merge pull request <a
href="https://redirect.github.com/rust-lang/hashbrown/issues/639">#639</a>
from gaujay/unbloat-get_inner-perf</li>
<li><a
href="71f8f37413"><code>71f8f37</code></a>
Merge pull request <a
href="https://redirect.github.com/rust-lang/hashbrown/issues/637">#637</a>
from gaujay/add-benchmarks</li>
<li><a
href="f1c039c1f6"><code>f1c039c</code></a>
Un-bloat get_inner functions to restore lookup performance</li>
<li>Additional commits viewable in <a
href="https://github.com/rust-lang/hashbrown/compare/v0.15.5...v0.16.0">compare
view</a></li>
</ul>
</details>
<br />


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Cargo.lock

@@ -2526,7 +2526,7 @@ dependencies = [
  "bitflags 2.9.4",
  "compact_str",
  "document-features",
- "hashbrown 0.15.5",
+ "hashbrown 0.16.0",
  "indoc",
  "itertools 0.14.0",
  "kasuari",
@@ -2604,7 +2604,7 @@ dependencies = [
  "color-eyre",
  "crossterm 0.29.0",
  "document-features",
- "hashbrown 0.15.5",
+ "hashbrown 0.16.0",
  "indoc",
  "instability",
  "itertools 0.14.0",

Cargo.toml

@@ -38,7 +38,7 @@ crossterm = "0.29"
 document-features = "0.2"
 fakeit = "1"
 futures = "0.3"
-hashbrown = "0.15"
+hashbrown = "0.16"
 indoc = "2"
 instability = "0.3"
 itertools = { version = "0.14", default-features = false, features = ["use_alloc"] }