fix(random): hint bundler browser targets, webpack5

[zachferland]

webpack5 no longer by default polyfills node libs like crypto, so by default build/bundle fails when consuming lib https://webpack.js.org/blog/2020-10-10-webpack-5-release/#automatic-nodejs-polyfills-removed

noticed already split by node/browser for runtime, this just hints to bundlers (webpack5) for browser targets that its safe to not include crypto and wont complain at build

probably helpful having similar changes in other packages here as well, but currently only needed random for now

[dchest]

Sorry for the wait, it's merged now. Thank you for your contribution! I'll release the updated version soon.

[jmrossy]

Thanks @zachferland, I needed this exact fix :)

@dchest do you know when you'll be releasing an updated version with this?

[dchest]

@jmrossy just released