Update `wasmparser` crate

[marxin]

The most recent version has adopted a new Visitor pattern we must migrate to:
https://docs.rs/wasmparser/0.242.0/wasmparser/macro.for_each_visit_operator.html

[theduke]

Cranelift may be tied to a version of the parser, so not sure if we can freely update without waiting for Cranelift.

[marxin]

Good point, that's something we should easily notice in the CI I guess.