Update Rust crate iddqd to 0.3.8 (#2419)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [iddqd](https://redirect.github.com/oxidecomputer/iddqd) |
workspace.dependencies | patch | `0.3.7` -> `0.3.8` |

---

### Release Notes

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

###
[`v0.3.8`](https://redirect.github.com/oxidecomputer/iddqd/blob/HEAD/CHANGELOG.md#038---2025-06-22)

[Compare
Source](https://redirect.github.com/oxidecomputer/iddqd/compare/iddqd-0.3.7...iddqd-0.3.8)

##### Added

- New `proptest` feature adds strategy and `Arbitrary` implementations
for map types.

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "after 8pm,before 6am" in timezone
America/Los_Angeles, Automerge - "after 8pm,before 6am" in timezone
America/Los_Angeles.

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, 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 has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4xLjQiLCJ1cGRhdGVkSW5WZXIiOiI0MS4xLjQiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbImRlcGVuZGVuY2llcyJdfQ==-->

Author: nextest-bot

Cargo.lock

@@ -68,7 +68,7 @@ hex = "0.4.3"
 home = "0.5.11"
 http = "1.3.1"
 humantime-serde = "1.1.1"
-iddqd = "0.3.7"
+iddqd = "0.3.8"
 # Disable punycode parsing since we only access well-known domains.
 idna_adapter = "=1.0.0"
 indenter = "0.3.3"

Cargo.toml

@@ -25,7 +25,7 @@ console = { version = "0.15.11" }
 either = { version = "1.15.0", features = ["use_std"] }
 form_urlencoded = { version = "1.2.1" }
 getrandom = { version = "0.3.3", default-features = false, features = ["std"] }
-hashbrown = { version = "0.15.3", default-features = false, features = ["allocator-api2", "inline-more"] }
+hashbrown = { version = "0.15.4", default-features = false, features = ["allocator-api2", "inline-more"] }
 indexmap = { version = "2.9.0", features = ["serde"] }
 log = { version = "0.4.27", default-features = false, features = ["std"] }
 memchr = { version = "2.7.4" }