[Snyk] Security upgrade metalsmith from 2.3.0 to 2.5.0#50

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-9541d61a3b00da1edd057356f748c01e

+104-211

Commits on Jun 10, 2022

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