chore(deps-dev): update @babel/types requirement from ~7.2.2 to ~7.3.0 (

#1327)

Updates the requirements on [@babel/types](https://github.com/babel/babel) to permit the latest version.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.3.0)

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

packages/stryker-javascript-mutator/package.json

@@ -42,7 +42,7 @@
     "tslib": "~1.9.3"
   },
   "devDependencies": {
-    "@babel/types": "~7.2.2",
+    "@babel/types": "~7.3.0",
     "@types/babel__generator": "^7.0.0",
     "@types/babel__traverse": "^7.0.0",
     "stryker-api": "^0.23.0",