[Snyk] Security upgrade @actions/core from 1.2.3 to 1.2.6#3

Open

snyk-bot wants to merge 1 commit intomasterfrom

snyk-fix-fc988db0fc1e26c0ebc4c85f8dc1ae92

Commits on Oct 3, 2020

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