Update jest requirement from ^19.0.2 to ^23.6.0#2

dependabot-preview[bot] wants to merge 1 commit intomasterarunghosh/react-sequence:masterfrom

dependabot/npm_and_yarn/jest-tw-23.6.0arunghosh/react-sequence:dependabot/npm_and_yarn/jest-tw-23.6.0Copy head branch name to clipboard