cargo-audit: bincode unmaintained

[stefano-garzarella]

virtio-queue-ser from https://github.com/rust-vmm/vm-virtio uses versionize that introduce bincode as a dependency and cargo audit now complains about it since it's unmaintained, see rust-vmm/vm-virtio#383

Crate:     bincode
Version:   1.3.3
Warning:   unmaintained
Title:     Bincode is unmaintained
Date:      2025-12-16
ID:        RUSTSEC-2025-0141
URL:       https://rustsec.org/advisories/RUSTSEC-2025-0141
Dependency tree:
bincode 1.3.3
└── versionize 0.2.0
    └── virtio-queue-ser 0.14.0