[Snyk] Security upgrade metalsmith from 2.3.0 to 2.6.0#37

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qmutz wants to merge 1 commit intomasterfrom snyk-fix-b4314e1344e68e7eb4d0d273ff1919e5

+100-250

Commits on Dec 1, 2023

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