Update dependency core-js to v3.8.3

Author: renovate-bot

package.json

@@ -59,7 +59,7 @@
     "babel-plugin-transform-react-pure-class-to-function": "1.0.1",
     "babel-plugin-transform-react-remove-prop-types": "0.4.24",
     "babel-plugin-import": "^1.13.1",
-    "core-js": "3.8.2",
+    "core-js": "3.8.3",
     "lodash": "4.17.20",
     "prop-types": "15.7.2",
     "react": "16.14.0",