Update dependency netflux-websocket to v0.1.21

package-lock.json

@@ -1075,9 +1075,7 @@
       "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
     },
     "netflux-websocket": {
-      "version": "0.1.20",
-      "resolved": "https://registry.npmjs.org/netflux-websocket/-/netflux-websocket-0.1.20.tgz",
-      "integrity": "sha512-svFkw4ol4gmkcXKnx5kF/8tR9mmtTCDzUlLy4mSlcNl/4iWlbDmgwp/+aJ3nqtv8fg12m+DAFGX2+fbC0//dcg=="
+      "version": "0.1.21"
     },
     "nthen": {
       "version": "0.1.8",
@@ -1720,4 +1718,4 @@
       "dev": true
     }
   }
-}
+}