fix(deps): update dependency helmet to v5.1.0

Author: renovate-bot

package-lock.json

@@ -50,7 +50,7 @@
     "extract-zip": "2.0.1",
     "formidable": "2.0.1",
     "fs-extra": "10.1.0",
-    "helmet": "5.0.2",
+    "helmet": "5.1.0",
     "i18n": "0.14.2",
     "jsonwebtoken": "8.5.1",
     "kv-logger": "0.5.3",