Bump acorn from 5.7.3 to 5.7.4 in /baseball_frontend#5

dependabot[bot] wants to merge 2 commits intomasterdev-chat/baseball:masterfrom

dependabot/npm_and_yarn/baseball_frontend/acorn-5.7.4dev-chat/baseball:dependabot/npm_and_yarn/baseball_frontend/acorn-5.7.4Copy head branch name to clipboard