Merge pull request #718 from parity-js/dependabot/npm_and_yarn/babel/cli-7.8.4

Author: dependabot-preview[bot]

package-lock.json

@@ -54,7 +54,7 @@
     "test:coverage": "cross-env NODE_ENV=test istanbul cover _mocha -- 'src/**/*.spec.js'"
   },
   "devDependencies": {
-    "@babel/cli": "^7.7.7",
+    "@babel/cli": "^7.8.4",
     "@babel/core": "^7.8.3",
     "@babel/node": "^7.7.7",
     "@babel/plugin-proposal-class-properties": "^7.7.0",