crystal 1.16.3

[BrewTestBot]

Created by brew bump

---

Created with brew bump-formula-pr.

• resource blocks have been checked for updates.

release notes

### Bugfixes
stdlib

(runtime) Fix Crystal::EventLoop::LibEvent and FiberExecutionContext  integration (#15759, backported from #15743, thanks @ysbaddaden)

compiler

(codegen) Add fallback if __crystal_raise_cast_failed is missing (#15769, backported from #15762, thanks @HertzDevil)
(semantic) [regression] Remove type binding on T for Pointer(T)#value= (#15757, backported from #15751, thanks @HertzDevil)

Infrastructure

Changelog for 1.16.3 (#15758, thanks @straight-shoota)

---

[github-actions]

🤖 An automated task has requested bottles to be published to this PR.

Please do not push to this PR branch before the bottle commits have been pushed, as this results in a state that is difficult to recover from. If you need to resolve a merge conflict, please use a merge commit. Do not force-push to this PR branch.