RUSTSEC-2020-0168: mach is unmaintained

[github-actions[bot]]

Details
Package	mach
Version	0.3.2
Warning	unmaintained
URL	https://github.com/fitzgen/mach/issues/63
Patched Versions	n/a

Last release was almost 4 years ago.

Maintainer(s) seem to be completely unreachable.

Possible Alternative(s)

These may or may not be suitable alternatives and have not been vetted in any way;

• mach2 - direct fork

[sydhds]

Should be resolved with wasmer version 4.3.4 (PR: https://github.com/massalabs/massa/pull/4725)