Bump start-server-and-test from 1.14.0 to 1.15.4 in /frontend#339

dependabot[bot] wants to merge 1 commit intomasterhunicus/mempool:masterfrom

dependabot/npm_and_yarn/frontend/start-server-and-test-1.15.4hunicus/mempool:dependabot/npm_and_yarn/frontend/start-server-and-test-1.15.4Copy head branch name to clipboard