chore(deps): bump indexmap from 2.12.0 to 2.12.1 (#18895)

Bumps [indexmap](https://github.com/indexmap-rs/indexmap) from 2.12.0 to
2.12.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/indexmap-rs/indexmap/blob/main/RELEASES.md">indexmap's
changelog</a>.</em></p>
<blockquote>
<h2>2.12.1 (2025-11-20)</h2>
<ul>
<li>Simplified a lot of internals using <code>hashbrown</code>'s new
bucket API.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/indexmap-rs/indexmap/commit/cfad7589c88e298e97449afb838c6a4b08c58394"><code>cfad758</code></a>
Merge pull request <a
href="https://redirect.github.com/indexmap-rs/indexmap/issues/424">#424</a>
from cuviper/buckets</li>
<li><a
href="https://github.com/indexmap-rs/indexmap/commit/a96b9c7fca6af946f17ecc38e7ee4dfd449a957f"><code>a96b9c7</code></a>
Release 2.12.1</li>
<li><a
href="https://github.com/indexmap-rs/indexmap/commit/6245ee54fa6e864de5f16a801d67a5f849eccb44"><code>6245ee5</code></a>
Use the bucket API from hashbrown v0.16.1</li>
<li>See full diff in <a
href="https://github.com/indexmap-rs/indexmap/compare/2.12.0...2.12.1">compare
view</a></li>
</ul>
</details>
<br />


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</details>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -155,7 +155,7 @@ futures = "0.3"
 half = { version = "2.7.0", default-features = false }
 hashbrown = { version = "0.14.5", features = ["raw"] }
 hex = { version = "0.4.3" }
-indexmap = "2.12.0"
+indexmap = "2.12.1"
 insta = { version = "1.43.2", features = ["glob", "filters"] }
 itertools = "0.14"
 liblzma = { version = "0.4.4", features = ["static"] }