Update Rust crate iddqd to 0.3.15 (#2747)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [iddqd](https://redirect.github.com/oxidecomputer/iddqd) |
workspace.dependencies | patch | `0.3.14` -> `0.3.15` |

---

### Release Notes

<details>
<summary>oxidecomputer/iddqd (iddqd)</summary>

###
[`v0.3.15`](https://redirect.github.com/oxidecomputer/iddqd/blob/HEAD/CHANGELOG.md#0315---2025-11-08)

[Compare
Source](https://redirect.github.com/oxidecomputer/iddqd/compare/iddqd-0.3.14...iddqd-0.3.15)

##### Added

- `retain` methods that allow filtering items in place based on a
predicate.
- `IdOrdMap::first`, `first_entry`, `last`, `last_entry`, `pop_first`,
and `pop_last` methods for accessing entries at the beginning and end of
the map.
- `BiHashMap::with_hasher` and `TriHashMap::with_hasher` are now `const
fn`.

##### Changed

- Reduced memory footprint for `BiHashMap` and `TriHashMap`.

</details>

---

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Author: nextest-bot

Cargo.lock

@@ -67,7 +67,7 @@ home = "0.5.11"
 http = "1.3.1"
 humantime = "2.3.0"
 humantime-serde = "1.1.1"
-iddqd = "0.3.14"
+iddqd = "0.3.15"
 # Disable punycode parsing since we only access well-known domains.
 idna_adapter = "=1.0.0"
 indenter = "0.3.4"