Upgrade npm dependencies (#18827)

* Update fs-extra, chai, download, get-port, sinon
* Update glob, mocha
* Update untildify, uuid
* Update vscode/test-electron
* Update del, expose-loader, flat
* Remove lolex
* Remove gulp utilities + upgrade iconv-lite
* Update jsonc-parser, mocha-junit-reporter
* sudo-prompt, uint64be, unicode, ts-node
* Upgrade webpack cli
* Upgrade minimatch

Author: kimadeline