Bump acorn from 5.7.3 to 5.7.4 in /generate-regions/ol-parcel-bundler#13

dependabot[bot] wants to merge 1 commit intomastergeorgejhunt/oldmaps:masterfrom

dependabot/npm_and_yarn/generate-regions/ol-parcel-bundler/acorn-5.7.4georgejhunt/oldmaps:dependabot/npm_and_yarn/generate-regions/ol-parcel-bundler/acorn-5.7.4Copy head branch name to clipboard