bump elliptic from 6.4.1 to 6.6.1#2

dependabot[bot] wants to merge 1 commit intomasterinterviewstreet/react-collapsable:masterfrom

dependabot/npm_and_yarn/elliptic-6.6.1interviewstreet/react-collapsable:dependabot/npm_and_yarn/elliptic-6.6.1Copy head branch name to clipboard