[Snyk] Security upgrade gatsby from 1.9.131 to 2.0.0#61

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-57af066d05e6115d09851f9c5255124a

+9,837-2,352

Commits on Jun 1, 2020

fix: docs/package.json & docs/yarn.lock to reduce vulnerabilities
snyk-bot
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