fix: EmployeeDB/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-QS-3153490

Author: snyk-bot

EmployeeDB/package.json

@@ -6,7 +6,7 @@
     "start": "node app"
   },
   "dependencies": {
-    "express": "4.17.1",
+    "express": "4.17.3",
     "jade": "*",
     "stylus": "*",
     "mongodb": ">= 0.9.6-7"