chore: bump libc from 0.2.80 to 0.2.81 (#14092)

* chore: bump libc from 0.2.80 to 0.2.81

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.80 to 0.2.81.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.80...0.2.81)

Signed-off-by: dependabot[bot] <support@github.com>

* [auto-commit] Update all Cargo lock files

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot-buildkite <dependabot-buildkite@noreply.solana.com>

ledger/Cargo.toml

@@ -21,7 +21,7 @@ futures = "0.3.8"
 futures-util = "0.3.5"
 itertools = "0.9.0"
 lazy_static = "1.4.0"
-libc = "0.2.72"
+libc = "0.2.81"
 log = { version = "0.4.8" }
 num_cpus = "1.13.0"
 prost = "0.6.1"