fix(deps): update dependency helmet to v3.21.1

Author: renovate-bot

package-lock.json

@@ -23,7 +23,7 @@
     "express-rate-limit": "5.0.0",
     "faker": "4.1.0",
     "git-rev": "0.2.1",
-    "helmet": "3.21.0",
+    "helmet": "3.21.1",
     "http-status-codes": "1.3.2",
     "is-plain-object": "3.0.0",
     "jscpd": "2.0.15",