bn.js new hotfix for v4.x

[vgrunner4v]

Hey, please look: indutny/bn.js#309

today bn.js released hotfix for v4, please consider to update the dependency here.
released today: https://www.npmjs.com/package/bn.js/v/4.12.1

Thanks!

Edit: silly me.. just noticed both libs from the same owner. i guess it will be updated soon :)

[ChALkeR]

this is insignificant for elliptic, the only case where this uses toString(16) outside of debug inspect() is getPrivate('hex'), where this doesn't pose a significant issue

also, fixed version matches the version spec here:

elliptic/package.json

Line 48 in b8a7edd

"bn.js": "^4.11.9",