[Snyk] Security upgrade gatsby-plugin-mdx from 3.20.0 to 4.0.0#2295

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travi wants to merge 1 commit intomasterfrom snyk-fix-6f32e4280f433b35154677507a2fe897

+1-1

Commits on Dec 26, 2022

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