Bump browserslist from 4.14.5 to 4.20.0#21

dependabot[bot] wants to merge 1 commit intomasterBeTomorrow/micro-observables:masterfrom

dependabot/npm_and_yarn/browserslist-4.20.0BeTomorrow/micro-observables:dependabot/npm_and_yarn/browserslist-4.20.0Copy head branch name to clipboard