chore(package): update @babel/core to version 7.5.5

Closes #523

Author: greenkeeper[bot]

package.json

@@ -126,7 +126,7 @@
     "uuid": "^3.3.2"
   },
   "devDependencies": {
-    "@babel/core": "7.2.2",
+    "@babel/core": "7.5.5",
     "@babel/plugin-proposal-decorators": "^7.1.0",
     "@commitlint/cli": "^7.0.0",
     "@commitlint/config-conventional": "^8.0.0",