[audit] update ignore-list
[audit] update ignore-list

Update cargo-audit ignore list with RUSTSEC-2021-0072,
RUSTSEC-2021-0073.

Closes: #8768

aptos-labs/aptos-core,libra/libra,libra/libra,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core