build(deps): Bump netlink-packet-route

Bumps the netlink group with 1 update in the / directory: [netlink-packet-route](https://github.com/rust-netlink/netlink-packet-route).


Updates `netlink-packet-route` from 0.19.0 to 0.21.0
- [Release notes](https://github.com/rust-netlink/netlink-packet-route/releases)
- [Changelog](https://github.com/rust-netlink/netlink-packet-route/blob/main/CHANGELOG)
- [Commits](rust-netlink/netlink-packet-route@v0.19.0...v0.21.0)

---
updated-dependencies:
- dependency-name: netlink-packet-route
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: netlink
...

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

Cargo.toml

@@ -23,7 +23,7 @@ goblin = { version = "0.9", default-features = false, features = ["elf64", "elf3
 libc = "0.2"
 log = { version = "0.4", features = ["std"] }
 netlink-packet-core = "0.7"
-netlink-packet-route = "0.19"
+netlink-packet-route = "0.21"
 nix = { version = "0.29", features = [
     "hostname",
     "ioctl",