Remove ignores of criterion-based RUSTSEC advisories once fixed

[brycx]

criterion relies on atty which is unsound and also seems as if it's unmaintained. Let's see if criterion (bheisler/criterion.rs#629) moves away from this, and if not, how else we should handle this.

[brycx]

As this is a part of our development dependency-tree and is causing a great deal of noise, I'll add this advisory to the ignore list. This is the same approach we took with serde_cbor (RUSTSEC-2021-0127) which also got pulled in by criterion. We need to remove the ignore once criterion no longer depends on the crate.

[brycx]

Tracking issues:

• atty advisory issued bheisler/criterion.rs#629
• serde_cbor is unmaintained (RUSTSEC-2021-0127) bheisler/criterion.rs#534