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>

vmm/Cargo.toml

@@ -38,7 +38,7 @@ once_cell = "1.14.0"
 option_parser = { path = "../option_parser" }
 pci = { path = "../pci" }
 qcow = { path = "../qcow" }
-seccompiler = "0.2.0"
+seccompiler = "0.3.0"
 serde = { version = "1.0.144", features = ["rc", "derive"] }
 serde_json = "1.0.85"
 serial_buffer = { path = "../serial_buffer" }