build: Bump libc from 0.2.137 to 0.2.138 in /fuzz

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.137 to 0.2.138.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.137...0.2.138)

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

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

fuzz/Cargo.lock

@@ -440,9 +440,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.137"
+version = "0.2.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
+checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
 
 [[package]]
 name = "libfuzzer-sys"

fuzz/Cargo.toml

@@ -12,7 +12,7 @@ cargo-fuzz = true
 block_util = { path = "../block_util" }
 devices = { path = "../devices" }
 epoll = "4.3.1"
-libc = "0.2.135"
+libc = "0.2.138"
 libfuzzer-sys = "0.4.5"
 micro_http = { git = "https://github.com/firecracker-microvm/micro-http", branch = "main" }
 net_util = { path = "../net_util" }