Bump flat and mocha in /osm-source/pages/webpack#73

dependabot[bot] wants to merge 1 commit intomasteriiab/maps:masterfrom

dependabot/npm_and_yarn/osm-source/pages/webpack/flat-and-mocha-5.0.2iiab/maps:dependabot/npm_and_yarn/osm-source/pages/webpack/flat-and-mocha-5.0.2Copy head branch name to clipboard