[Snyk] Security upgrade gatsby from 5.0.0 to 5.4.0#14

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-ba9192fe6aadb04f8c02a87a3e9ade41

+2,606-477

Commits on Feb 18, 2023

fix: starters/default/package.json, starters/default/package-lock.json & starters/default/.snyk to reduce vulnerabilities
snyk-bot
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