build(deps-dev): bump @babel/core from 7.5.5 to 7.6.0 (#105)

Author: dependabot-preview[bot]

package-lock.json

@@ -37,7 +37,7 @@
   "license": "MIT",
   "devDependencies": {
     "@babel/cli": "^7.6.0",
-    "@babel/core": "^7.4.5",
+    "@babel/core": "^7.6.0",
     "@babel/generator": "^7.5.0",
     "@babel/parser": "^7.5.0",
     "@babel/preset-env": "^7.4.5",