fix: upgrade @babel/polyfill from 7.11.5 to 7.12.1 (#818)

Snyk has created this PR to upgrade @babel/polyfill from 7.11.5 to 7.12.1.

See this package in npm:
https://www.npmjs.com/package/@babel/polyfill

See this project in Snyk:
https://app.snyk.io/org/robertslando/project/c2f8e12f-f1fb-4fdb-b1cd-09a75db93ac6?utm_source=github&utm_medium=upgrade-pr

Co-authored-by: Chris Nesbitt-Smith <chris@cns.me.uk>

Author: snyk-bot

package-lock.json

@@ -88,7 +88,7 @@
     }
   },
   "dependencies": {
-    "@babel/polyfill": "^7.11.5",
+    "@babel/polyfill": "^7.12.1",
     "ansi_up": "^4.0.4",
     "app-root-path": "^3.0.0",
     "axios": "^0.20.0",