[Snyk] Security upgrade gatsby from 2.20.25 to 3.13.0#39

Open

snyk-bot wants to merge 1 commit intomasterfrom

snyk-fix-eadb0196b52f33a80be59f29332f22ad

Commits on Aug 31, 2021

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