fix: upgrade packages with vulnerabilities (#1388)

packages/embark-ui/package.json

@@ -102,7 +102,6 @@
     "react-json-view": "1.19.1",
     "react-redux": "5.1.1",
     "react-router-dom": "4.3.1",
-    "react-scripts": "1.1.5",
     "react-scroll-to-component": "1.0.2",
     "react-treebeard": "2.1.0",
     "reactstrap": "6.5.0",

packages/embark/package.json

@@ -108,7 +108,7 @@
     "json-parse-better-errors": "1.0.2",
     "live-plugin-manager-git-fix": "0.12.1",
     "lodash.clonedeep": "4.5.0",
-    "merge": "1.2.0",
+    "merge": "1.2.1",
     "mocha": "5.2.0",
     "multihashes": "0.4.14",
     "neo-blessed": "0.2.0",