Update Rust crate hashbrown to v0.16.1 (#21605)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [hashbrown](https://redirect.github.com/rust-lang/hashbrown) |
workspace.dependencies | patch | `0.16.0` -> `0.16.1` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>rust-lang/hashbrown (hashbrown)</summary>

###
[`v0.16.1`](https://redirect.github.com/rust-lang/hashbrown/blob/HEAD/CHANGELOG.md#0161---2025-11-20)

[Compare
Source](https://redirect.github.com/rust-lang/hashbrown/compare/v0.16.0...v0.16.1)

##### Added

- Added `HashTable` methods related to the raw bucket index
([#&#8203;657](https://redirect.github.com/rust-lang/hashbrown/issues/657))
- Added `VacantEntryRef::insert_with_key`
([#&#8203;579](https://redirect.github.com/rust-lang/hashbrown/issues/579))

##### Changed

- Removed specialization for `Copy` types
([#&#8203;662](https://redirect.github.com/rust-lang/hashbrown/issues/662))
- The `get_many_mut` family of methods have been renamed to
`get_disjoint_mut`
to match the standard library. The old names are still present for now,
but
deprecated.
([#&#8203;648](https://redirect.github.com/rust-lang/hashbrown/issues/648))
- Recognize and use over-sized allocations when using custom allocators.
([#&#8203;523](https://redirect.github.com/rust-lang/hashbrown/issues/523))
- Depend on `serde_core` instead of `serde`.
([#&#8203;649](https://redirect.github.com/rust-lang/hashbrown/issues/649))
- Optimized `collect` on rayon parallel iterators.
([#&#8203;652](https://redirect.github.com/rust-lang/hashbrown/issues/652))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on Monday" (UTC),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/astral-sh/ruff).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi4xNi4xIiwidXBkYXRlZEluVmVyIjoiNDIuMTYuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiaW50ZXJuYWwiXX0=-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]