Bump third_party/libwebsockets/repo from c57c239 to 3f7c79f

Bumps [third_party/libwebsockets/repo](https://github.com/warmcat/libwebsockets) from `c57c239` to `3f7c79f`.
- [Commits](warmcat/libwebsockets@c57c239...3f7c79f)

---
updated-dependencies:
- dependency-name: third_party/libwebsockets/repo
  dependency-type: direct:production
...

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