chore:(package): Update core-js to the latest version 🚀 (react-tags#493)

* fix(package): update core-js to version 2.6.5

* chore(package): update lockfile package-lock.json

Author: greenkeeper[bot]

package-lock.json

@@ -37,7 +37,7 @@
   },
   "dependencies": {
     "classnames": "2.2.6",
-    "core-js": "2.6.4",
+    "core-js": "2.6.5",
     "lodash": "4.17.11",
     "memoize-one": "5.0.0",
     "prop-types": "15.6.1"