refactor: upgrade express from 4.17.2 to 4.17.3 (parse-community#7977)

Author: snyk-bot

package-lock.json

@@ -32,7 +32,7 @@
     "commander": "5.1.0",
     "cors": "2.8.5",
     "deepcopy": "2.1.0",
-    "express": "4.17.2",
+    "express": "4.17.3",
     "follow-redirects": "1.14.9",
     "graphql": "15.8.0",
     "graphql-list-fields": "2.0.2",