fix: specify version for getrandom

[jacek-prisma]

getrandom-0.3 has removed the js feature and handles the JS implementation differently now. Due to the version constraint being 0, this crate doesn't compile as of that change. It'd be nice to eventually use the new version, but in the meantime I thought it'd be worth to open a PR to set the version to the last one that works which is 0.2 in order to fix the build.