Update dependency webpack-dev-server to v3.9.0
Update dependency webpack-dev-server to v3.9.0

pgentile/tests-cucumber,pgentile/tests-cucumber,pgentile/zucchini-ui,pgentile/zucchini-ui,pgentile/zucchini-ui,pgentile/tests-cucumber,pgentile/zucchini-ui,pgentile/zucchini-ui,pgentile/tests-cucumber