[jnigen] Bump egor-tensin/setup-clang from 1.3 to 1.4 (https://github.com/dart-lang/jnigen/issues/180)

Bumps [egor-tensin/setup-clang](https://github.com/egor-tensin/setup-clang) from 1.3 to 1.4.
- [Release notes](https://github.com/egor-tensin/setup-clang/releases)
- [Commits](https://github.com/egor-tensin/setup-clang/compare/01d437c0618e76d3c44e7d58f5d175c75cb37bac...ef434b41eb33a70396fb336b1bae39c76d740c3d)

---
updated-dependencies:
- dependency-name: egor-tensin/setup-clang
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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