Update packages

package.json

@@ -39,20 +39,20 @@
     "lru-cache": "^5.1.1",
     "mime-types": "^2.1.21",
     "minimist": "1.2.x",
-    "moment": "^2.23.0",
+    "moment": "^2.24.0",
     "nntp-server": "^1.0.3",
-    "node-pty": "^0.8.0",
+    "node-pty": "^0.8.1",
     "nodemailer": "^5.1.1",
     "rlogin": "^1.0.0",
     "sane": "^4.0.2",
     "sanitize-filename": "^1.6.1",
     "sqlite3": "^4.0.6",
     "sqlite3-trans": "^1.2.1",
-    "ssh2": "^0.7.1",
+    "ssh2": "^0.8.2",
     "temptmp": "^1.1.0",
     "uuid": "^3.2.1",
     "uuid-parse": "^1.0.0",
-    "ws": "^6.1.2",
+    "ws": "^6.1.3",
     "xxhash": "^0.2.4",
     "yazl": "^2.5.1"
   },