[Snyk] Security upgrade xlsx from 0.10.6 to 0.16.0#15

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-9b711c95931656fdeab684a0a2389a25

+359-716

Commits on Jul 24, 2020

fix: package.json & package-lock.json to reduce vulnerabilities
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