Bump third_party/libwebsockets/repo from 75849aa to 3768615

Bumps [third_party/libwebsockets/repo](https://github.com/warmcat/libwebsockets) from `75849aa` to `3768615`.
- [Commits](warmcat/libwebsockets@75849aa...3768615)

---
updated-dependencies:
- dependency-name: third_party/libwebsockets/repo
  dependency-version: 37686150755262571dc8956876521c1279db53a4
  dependency-type: direct:production
...

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Author: dependabot[bot]