chore(deps): bump ws and aws-iot-device-sdk in /sst

Bumps [ws](https://github.com/websockets/ws) and [aws-iot-device-sdk](https://github.com/aws/aws-iot-device-sdk-js). These dependencies needed to be updated together.

Updates `ws` from 8.13.0 to 8.18.0
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.13.0...8.18.0)

Updates `ws` from 7.5.9 to 8.18.0
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.13.0...8.18.0)

Updates `aws-iot-device-sdk` from 2.2.12 to 2.2.15
- [Release notes](https://github.com/aws/aws-iot-device-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-iot-device-sdk-js/blob/master/CHANGELOG.md)
- [Commits](aws/aws-iot-device-sdk-js@v2.2.12...v2.2.15)

---
updated-dependencies:
- dependency-name: ws
  dependency-type: indirect
- dependency-name: ws
  dependency-type: indirect
- dependency-name: aws-iot-device-sdk
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>