[Snyk] Security upgrade gatsby from 1.9.279 to 2.1.1#467

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-c1b73d7d93b97fabd0c1df93752b40a8

+1,035-4

Commits on Jun 4, 2020

fix: examples/using-emotion-prismjs/package.json & examples/using-emotion-prismjs/.snyk to reduce vulnerabilities
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