chore(deps): update rust crate getrandom to 0.4.2

[xtqqczze]

https://github.com/rust-random/getrandom/blob/master/CHANGELOG.md#042---2026-03-03

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/rm/isatty. tests/rm/isatty is passing on 'main'. Maybe you have to rebase?
Note: The gnu test tests/env/env-signal-handler was skipped on 'main' but is now failing.

[cakebaker]

Thanks!

[xtqqczze]

@cakebaker I wonder why @renovate isn't picking these up. Should we just update everything in Cargo.lock rather than individually?

[cakebaker]

@xtqqczze it's a transitive dependency and usually we don't update such dependencies actively. Unless there is a specific reason, like a problem or a security advisory. With hundreds of transitive dependencies, updating them individually would add a lot of busy-work with little benefit imo.