chore(deps): update babel monorepo to v7.6.3 (#450)

Author: renovate[bot]

package-lock.json

@@ -38,10 +38,10 @@
     "vue-template-compiler": "^2.6.10"
   },
   "devDependencies": {
-    "@babel/core": "7.6.2",
+    "@babel/core": "7.6.3",
     "@babel/plugin-proposal-object-rest-spread": "7.6.2",
     "@babel/plugin-transform-object-assign": "7.2.0",
-    "@babel/preset-env": "7.6.2",
+    "@babel/preset-env": "7.6.3",
     "@vue/test-utils": "1.0.0-beta.29",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "10.0.3",