[deps]: Update Rust crate serde_qs to >=0.12.0, <0.16 (#272)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [serde_qs](https://redirect.github.com/samscott89/serde_qs) |
workspace.dependencies | minor | `>=0.12.0, <0.15` -> `>=0.12.0, <0.16`
|

---

### Release Notes

<details>
<summary>samscott89/serde_qs (serde_qs)</summary>

###
[`v0.15.0`](https://redirect.github.com/samscott89/serde_qs/blob/HEAD/CHANGELOG.md#0150---2025-04-22)

[Compare
Source](https://redirect.github.com/samscott89/serde_qs/compare/v0.14.0...v0.15.0)

##### Other

- Support preserving order of parameters when serializing to a Map.
([#&#8203;106](https://redirect.github.com/samscott89/serde_qs/pull/106))
- Fix clippy.
([#&#8203;129](https://redirect.github.com/samscott89/serde_qs/pull/129))
- reorder struct fields to avoid serde buffering
([#&#8203;128](https://redirect.github.com/samscott89/serde_qs/pull/128))

</details>

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Cargo.lock

@@ -50,7 +50,7 @@ reqwest = { version = ">=0.12.5, <0.13", features = [
 schemars = { version = ">=0.8.9, <0.9", features = ["uuid1", "chrono"] }
 serde = { version = ">=1.0, <2.0", features = ["derive"] }
 serde_json = ">=1.0.96, <2.0"
-serde_qs = ">=0.12.0, <0.15"
+serde_qs = ">=0.12.0, <0.16"
 serde_repr = ">=0.1.12, <0.2"
 thiserror = ">=1.0.40, <3"
 tokio = { version = "1.36.0", features = ["macros"] }