Bump ws from 3.0.0 to 3.3.1

Bumps [ws](https://github.com/websockets/ws) from 3.0.0 to 3.3.1. - [Release notes](https://github.com/websockets/ws/releases) - [Commits](websockets/ws@3.0.0...3.3.1) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -27,7 +27,7 @@
  "signal-desktop": "matrix-hacks/signal-desktop#master",
  "underscore": "^1.10.2",
  "worker": "^0.4.0",
- "ws": "^7.2.3",
+ "ws": "^3.3.1",
  "xhr2": "^0.2.0"
  }
 }