[Snyk] Upgrade react from 15.6.1 to 15.7.0#20

pushkar1923 wants to merge 1 commit intomode-release-8.4.xmode/voltdb:mode-release-8.4.xfrom

snyk-upgrade-76a72b503deddba223212c8cb0402c7fmode/voltdb:snyk-upgrade-76a72b503deddba223212c8cb0402c7fCopy head branch name to clipboard