build(deps): bump acorn from 5.7.3 to 5.7.4 in /chapter4/node-serial-benchmark#3

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dependabot/npm_and_yarn/chapter4/node-serial-benchmark/acorn-5.7.4yifeewang/node:dependabot/npm_and_yarn/chapter4/node-serial-benchmark/acorn-5.7.4Copy head branch name to clipboard