websockets pinned to 15.0.0 - 16.0 is latest

websockets is now on version `16.0`

#### Environment details

  - Programming language: Python
  - OS: Linux
  - Language runtime version: 3.13
  - Package version: 1.62.0

#### Steps to reproduce

  1. requirements.txt pins `websockets==15.0.0`
  2. Latest is `websockets 16.0`


