- npm: Clean-up and fix new timing issues with cypress test scripts

- npm: Update devDeps (testing)

package.json

@@ -49,13 +49,13 @@
     "license-badge": "license-badger --uncategorizedLicenseTemplate \"\\${license} (\\${name} (\\${version}))\" --filteredTypes=nonempty --textTemplate \"License types\n(project, deps, and bundled devDeps)\" --packageJson --production badges/licenses-badge.svg",
     "license-badge-dev": "license-badger --corrections --filteredTypes=nonempty --textTemplate \"License types\n(all devDeps)\" --allDevelopment badges/licenses-badge-dev.svg",
     "coverage-badge": "coveradge badges/coverage-badge",
-    "open-cov": "npm-run-all instrument --parallel --race start cypress:open",
+    "open-cov": "run-p --race start cypress:open",
     "open-tests": "run-p start cypress:open",
     "report": "npx nyc report",
     "report-summary": "npx nyc report --reporter=text-summary",
     "build-by-config": "rollup -c rollup-config.config.js",
-    "test-cov-open": "npm-run-all instrument --parallel --race start cypress:run",
-    "test-cov": "run-s -c test-cov-open report-summary",
+    "test-cov-open": "run-p --race start cypress:run",
+    "test-cov": "run-s -c instrument test-cov-open report-summary",
     "test-no-build": "run-s eslint build-html build-by-config && npm test",
     "prep": "run-s eslint build-html rollup build-by-config",
     "test": "run-p start cypress:run"
@@ -129,13 +129,13 @@
     "@cypress/code-coverage": "^1.11.0",
     "@cypress/fiddle": "^1.4.0",
     "@mysticatea/eslint-plugin": "^13.0.0",
-    "axe-core": "^3.4.1",
+    "axe-core": "^3.4.2",
     "babel-plugin-transform-object-rest-spread": "^7.0.0-beta.3",
     "coffeescript": "^2.5.1",
     "copyfiles": "^2.2.0",
     "core-js-bundle": "^3.6.4",
     "coveradge": "^0.3.0",
-    "cypress": "^3.8.3",
+    "cypress": "^4.0.0",
     "cypress-axe": "^0.5.3",
     "cypress-multi-reporters": "^1.2.3",
     "deparam": "git+https://github.com/brettz9/deparam.git#updates",