chore(generic): upgrade fs-extra to v5 and inquirer to v5
chore(generic): upgrade fs-extra to v5 and inquirer to v5

fs-extra changes:
https://github.com/jprichardson/node-fs-extra/blob/master/CHANGELOG.md#500--2017-12-11

inquirer changes:
https://github.com/SBoudrias/Inquirer.js/releases/tag/v5.0.0

electron-userland/electron-forge,electron-userland/electron-forge,electron-userland/electron-forge,electron-userland/electron-forge