Upgrade zerocopy + disable default features for no_std

Summary:
Taking a look at https://github.com/project-oak/oak/blob/059354ec30611756aafb923b325fadc56185a2f2/bazel/crates/oak_crates.bzl#L256-L260

It seems like Google's `zerocopy` is more recent. Let's upgrade to their version, as well as make sure we have a similar set up whereby we aren't injecting `no_std` into our environments.

Reviewed By: dtolnay

Differential Revision: D76612812

fbshipit-source-id: 65bc877548085ca15eff28145fd86788508d4fdc

Author: CookieComputing