chore: bump notepack.io to version ~3.0.1 (#464)

BREAKING CHANGE: the format of Date objects is modified in a non
backward-compatible way, as notepack.io now implements the MessagePack
Timestamp extension type.

Reference: https://github.com/msgpack/msgpack/blob/master/spec.md#timestamp-extension-type

Previous versions of the adapter will not be able to parse the Date
objects sent by newer versions.

- Reference: https://github.com/darrachequesne/notepack/releases/tag/3.0.0
- Diff: darrachequesne/notepack@2.3.0...3.0.1

Author: papandreou

package-lock.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "debug": "~4.3.1",
-    "notepack.io": "~2.2.0",
+    "notepack.io": "~3.0.1",
     "socket.io-adapter": "^2.4.0",
     "uid2": "1.0.0"
   },