build: bump libc from 0.2.103 to 0.2.104 in /fuzz

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.103 to 0.2.104.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.103...0.2.104)

---
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

@@ -146,7 +146,7 @@ dependencies = [
 
 [[package]]
 name = "cloud-hypervisor"
-version = "18.0.0"
+version = "19.0.0"
 dependencies = [
  "anyhow",
  "api_client",
@@ -338,9 +338,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.103"
+version = "0.2.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd8f7255a17a627354f321ef0055d63b898c6fb27eff628af4d1b66b7331edf6"
+checksum = "7b2f96d100e1cf1929e7719b7edb3b90ab5298072638fccd77be9ce942ecdfce"
 
 [[package]]
 name = "libfuzzer-sys"

fuzz/Cargo.toml

@@ -10,7 +10,7 @@ cargo-fuzz = true
 
 [dependencies]
 block_util = { path = "../block_util" }
-libc = "0.2.103"
+libc = "0.2.104"
 libfuzzer-sys = "0.4.2"
 qcow = { path = "../qcow" }
 seccompiler = "0.2.0"