Bump websocket-extensions from 0.1.3 to 0.1.4

Bumps [websocket-extensions](https://github.com/faye/websocket-extensions-node) from 0.1.3 to 0.1.4. - [Release notes](https://github.com/faye/websocket-extensions-node/releases) - [Changelog](https://github.com/faye/websocket-extensions-node/blob/master/CHANGELOG.md) - [Commits](faye/websocket-extensions-node@0.1.3...0.1.4) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]