update babel-runtime dependency in react-error-overlay and react-scripts (facebook#2991)

* update babel-runtime dependency in react-error-overlay and react-scripts

`[email protected]` have a dependency on `[email protected]`
`[email protected]` on `[email protected]`

> npm ls regenerator-runtime

```
└─┬ [email protected]
  ├─┬ [email protected]
  │ └─┬ [email protected]
  │   └── [email protected]
  ├─┬ [email protected]
  │ └─┬ [email protected]
  │   └─┬ [email protected]
  │     └── [email protected]
  ├─┬ [email protected]
  │ └── [email protected]
  └─┬ [email protected]
    └─┬ [email protected]
      └── [email protected]
```

* fix requested changes

Author: christophehurpeau

packages/react-error-overlay/package.json

@@ -33,7 +33,7 @@
   "dependencies": {
     "anser": "1.4.1",
     "babel-code-frame": "6.22.0",
-    "babel-runtime": "6.23.0",
+    "babel-runtime": "6.26.0",
     "html-entities": "1.2.1",
     "react": "^15.5.4",
     "react-dom": "^15.5.4",

packages/react-scripts/package.json

@@ -27,7 +27,7 @@
     "babel-jest": "20.0.3",
     "babel-loader": "7.1.1",
     "babel-preset-react-app": "^3.0.2",
-    "babel-runtime": "6.23.0",
+    "babel-runtime": "6.26.0",
     "case-sensitive-paths-webpack-plugin": "2.1.1",
     "chalk": "1.1.3",
     "css-loader": "0.28.4",