RUSTSEC-2026-0163 `pqcrypto-internals` is unmaintained: upstream PQClean project being archived

This crate provides internal FFI utilities for the pqcrypto- ecosystem, directly wrapping C implementations from PQClean. The PQClean project is being archived in or after July 2026 see PQClean/PQClean604, after which no further security patches or bug fixes will be applied to the upstream...