Update Rust crate unicode-ident to v1.0.16 (#15895)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [unicode-ident](https://redirect.github.com/dtolnay/unicode-ident) |
workspace.dependencies | patch | `1.0.15` -> `1.0.16` |

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### Release Notes

<details>
<summary>dtolnay/unicode-ident (unicode-ident)</summary>

###
[`v1.0.16`](https://redirect.github.com/dtolnay/unicode-ident/releases/tag/1.0.16)

[Compare
Source](https://redirect.github.com/dtolnay/unicode-ident/compare/1.0.15...1.0.16)

- Update `rand` dev dependency to 0.9
([#&#8203;29](https://redirect.github.com/dtolnay/unicode-ident/issues/29))

</details>

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Cargo.lock

@@ -4006,9 +4006,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.15"
+version = "1.0.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11cd88e12b17c6494200a9c1b683a04fcac9573ed74cd1b62aeb2727c5592243"
+checksum = "a210d160f08b701c8721ba1c726c11662f877ea6b7094007e1ca9a1041945034"
 
 [[package]]
 name = "unicode-normalization"