cargo: bump libc from 0.2.138 to 0.2.139

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.138 to 0.2.139.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.138...0.2.139)

---
updated-dependencies:
- dependency-name: libc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -867,9 +867,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.138"
+version = "0.2.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
+checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
 
 [[package]]
 name = "libgit2-sys"

Cargo.toml

@@ -62,7 +62,7 @@ tracing = "0.1.37"
 tracing-subscriber = { version = "0.3.16", default-features = false, features = ["std", "ansi", "env-filter", "fmt"] }
 
 [target.'cfg(unix)'.dependencies]
-libc = { version = "0.2.138" }
+libc = { version = "0.2.139" }
 
 [dev-dependencies]
 assert_cmd = "2.0.7"