fix: upgrade express from 4.17.2 to 4.17.3

Snyk has created this PR to upgrade express from 4.17.2 to 4.17.3.

See this package in npm:
https://www.npmjs.com/package/express

See this project in Snyk:
https://app.snyk.io/org/davehorton/project/cec90d0e-0ded-433e-a42e-fe78b28ae489?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -40,7 +40,7 @@
     "deepcopy": "^2.1.0",
     "drachtio-fsmrf": "^2.0.13",
     "drachtio-srf": "^4.4.61",
-    "express": "^4.17.1",
+    "express": "^4.17.3",
     "helmet": "^5.0.2",
     "ip": "^1.1.5",
     "moment": "^2.29.1",