Bump umi-tools from 0.1.4 to 0.4.0

Bumps [umi-tools](https://github.com/umijs/umi-tools) from 0.1.4 to 0.4.0.
- [Release notes](https://github.com/umijs/umi-tools/releases)
- [Changelog](https://github.com/umijs/umi-tools/blob/master/CHANGELOG.md)
- [Commits](https://github.com/umijs/umi-tools/commits/v0.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -37,7 +37,7 @@
     "np": "^5.0.3",
     "pre-commit": "~1.2.2",
     "react-toolbox": "^1.2.5",
-    "umi-tools": "^0.1.4"
+    "umi-tools": "^0.4.0"
   },
   "babel": {
     "presets": [