Bump async from 2.6.3 to 2.6.4 in /common-errors-app#36

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dependabot/npm_and_yarn/common-errors-app/async-2.6.4frontend-application-development-uw20/week4-code-examples:dependabot/npm_and_yarn/common-errors-app/async-2.6.4Copy head branch name to clipboard