chore(deps): update rust crate libc to 0.2.168 (#1966)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [libc](https://redirect.github.com/rust-lang/libc) |
workspace.dependencies | patch | `0.2.167` -> `0.2.168` |

---

### Release Notes

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

###
[`v0.2.168`](https://redirect.github.com/rust-lang/libc/releases/tag/0.2.168)

[Compare
Source](https://redirect.github.com/rust-lang/libc/compare/0.2.167...0.2.168)

##### Added

- Linux: Add new process flags
([#&#8203;4174](https://redirect.github.com/rust-lang/libc/pull/4174))
- Linux: Make `IFA_*` constants available on all Linux targets
[#&#8203;4185](https://redirect.github.com/rust-lang/libc/pull/4185)
- Linux: add `MAP_DROPPABLE`
[#&#8203;4173](https://redirect.github.com/rust-lang/libc/pull/4173)
- Solaris, Illumos: add `SIGRTMIN` and `SIGRTMAX`
[#&#8203;4171](https://redirect.github.com/rust-lang/libc/pull/4171)
- Unix, Linux: adding POSIX `memccpy` and `mempcpy` GNU extension
\[https://github.com/rust-lang/libc/pull/4186](https://redirect.github.com/rust-lang/libc/pull/4186)6.

##### Deprecated

- FreeBSD: Deprecate the CAP_UNUSED\* and CAP_ALL\* constants
([#&#8203;4183](https://redirect.github.com/rust-lang/libc/pull/4183))

##### Fixed

- Make the `Debug` implementation for unions opaque
([#&#8203;4176](https://redirect.github.com/rust-lang/libc/pull/4176))

##### Other

- Allow the `unpredictable_function_pointer_comparisons` lint where
needed
[#&#8203;4177](https://redirect.github.com/rust-lang/libc/pull/4177)
- CI: Upload artifacts created by libc-test
[#&#8203;4180](https://redirect.github.com/rust-lang/libc/pull/4180)
- CI: Use workflow commands to group output by target
[#&#8203;4179](https://redirect.github.com/rust-lang/libc/pull/4179)
- CI: add caching
[#&#8203;4183](https://redirect.github.com/rust-lang/libc/pull/4183)

</details>

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Author: nextest-bot

Cargo.lock

@@ -70,7 +70,7 @@ indoc = "2.0.5"
 insta = { version = "1.41.1", default-features = false }
 is_ci = "1.2.0"
 itertools = "0.13.0"
-libc = "0.2.167"
+libc = "0.2.168"
 log = "0.4.22"
 maplit = "1.0.2"
 miette = "7.4.0"

Cargo.toml

@@ -48,28 +48,28 @@ syn = { version = "2.0.90", features = ["extra-traits", "full", "visit", "visit-
 futures-channel = { version = "0.3.31", features = ["sink"] }
 futures-core = { version = "0.3.31" }
 futures-sink = { version = "0.3.31", default-features = false, features = ["std"] }
-libc = { version = "0.2.167", features = ["extra_traits"] }
+libc = { version = "0.2.168", features = ["extra_traits"] }
 linux-raw-sys = { version = "0.4.14", default-features = false, features = ["elf", "errno", "general", "ioctl", "no_std", "std"] }
 mio = { version = "1.0.2", features = ["net", "os-ext"] }
 rustix = { version = "0.38.37", features = ["fs", "stdio", "termios"] }
 smallvec = { version = "1.13.2", default-features = false, features = ["const_new"] }
 tokio = { version = "1.42.0", default-features = false, features = ["net"] }
 
 [target.x86_64-unknown-linux-gnu.build-dependencies]
-libc = { version = "0.2.167", features = ["extra_traits"] }
+libc = { version = "0.2.168", features = ["extra_traits"] }
 
 [target.x86_64-apple-darwin.dependencies]
 futures-channel = { version = "0.3.31", features = ["sink"] }
 futures-core = { version = "0.3.31" }
 futures-sink = { version = "0.3.31", default-features = false, features = ["std"] }
-libc = { version = "0.2.167", features = ["extra_traits"] }
+libc = { version = "0.2.168", features = ["extra_traits"] }
 mio = { version = "1.0.2", features = ["net", "os-ext"] }
 rustix = { version = "0.38.37", features = ["fs", "stdio", "termios"] }
 smallvec = { version = "1.13.2", default-features = false, features = ["const_new"] }
 tokio = { version = "1.42.0", default-features = false, features = ["net"] }
 
 [target.x86_64-apple-darwin.build-dependencies]
-libc = { version = "0.2.167", features = ["extra_traits"] }
+libc = { version = "0.2.168", features = ["extra_traits"] }
 
 [target.x86_64-pc-windows-msvc.dependencies]
 futures-channel = { version = "0.3.31", features = ["sink"] }