[Snyk] Security upgrade swagger2openapi from 5.3.3 to 7.0.4#8

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-f913768bdc8baaca009871cc33949610

+318-284

Commits on Nov 21, 2020

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