Bump async from 2.6.3 to 2.6.4 in /lec13-persistence/contact-list-persistent#59

dependabot[bot] wants to merge 1 commit intomasterrrobbes/EngineeringOfMobileSystems:masterfrom

dependabot/npm_and_yarn/lec13-persistence/contact-list-persistent/async-2.6.4rrobbes/EngineeringOfMobileSystems:dependabot/npm_and_yarn/lec13-persistence/contact-list-persistent/async-2.6.4Copy head branch name to clipboard