[Snyk] Upgrade libp2p-crypto from 0.19.7 to 0.21.0#4

snyk-bot wants to merge 1 commit intomasteradamlaska/js-libp2p:masterfrom

snyk-upgrade-1406536236639bb6c63d0b9ee24855fcadamlaska/js-libp2p:snyk-upgrade-1406536236639bb6c63d0b9ee24855fcCopy head branch name to clipboard