[Snyk] Security upgrade @horizon/server from 1.1.3 to 2.0.0#17

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snyk-bot wants to merge 1 commit intonextfrom snyk-fix-93407cff90acd48c50cd55e9bbf5a9f0

+1-1

Commits on Nov 21, 2022

fix: examples/express-server/package.json to reduce vulnerabilities
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