fix(ext/websocket): use HTTPS git URL for fastwebsockets dep so CI runners can clone it
The SSH URL needs git@github.com auth that CI runners don't carry; HTTPS to the public denoland/fastwebsockets repo works anonymously. Pinning to the PR #133 head commit (a14f4bae) so the build is reproducible without depending on the branch tip.
Co-Authored-By: Divy Srivastava <me@littledivy.com>