build: Bump seccompiler from 0.2.0 to 0.3.0

Bumps [seccompiler](https://github.com/rust-vmm/seccompiler) from 0.2.0 to 0.3.0.
- [Release notes](https://github.com/rust-vmm/seccompiler/releases)
- [Changelog](https://github.com/rust-vmm/seccompiler/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rust-vmm/seccompiler/compare/v0.2.0...seccompiler-v0.3.0)

---
updated-dependencies:
- dependency-name: seccompiler
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

fuzz/Cargo.toml

@@ -17,7 +17,7 @@ libfuzzer-sys = "0.4.4"
 micro_http = { git = "https://github.com/firecracker-microvm/micro-http", branch = "main" }
 once_cell = "1.14.0"
 qcow = { path = "../qcow" }
-seccompiler = "0.2.0"
+seccompiler = "0.3.0"
 vhdx = { path = "../vhdx" }
 virtio-devices = { path = "../virtio-devices" }
 virtio-queue = "0.6.0"