[Snyk] Upgrade react-dom from 16.4.1 to 16.9.0#1

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snyk-bot wants to merge 1 commit intomasterfrom snyk-upgrade-f79e6974349edfc33e8fde2d2bef4627

+47-19

Commits on Aug 29, 2019

chore: upgrade react-dom from 16.4.1 to 16.9.0
snyk-test
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