wasm-mutate fuzz targets (#3836)

* fuzzing: Add a custom mutator based on `wasm-mutate`

* fuzz: Add a version of the `compile` fuzz target that uses `wasm-mutate`

* Update `wasmparser` dependencies

fuzz/Cargo.toml

@@ -32,6 +32,12 @@ path = "fuzz_targets/compile.rs"
 test = false
 doc = false
 
+[[bin]]
+name = "compile-mutate"
+path = "fuzz_targets/compile-mutate.rs"
+test = false
+doc = false
+
 [[bin]]
 name = "instantiate"
 path = "fuzz_targets/instantiate.rs"