build(deps): bump slang from 3ddb9b3 to ac5989e

Bumps [slang](https://github.com/MikePopoloski/slang) from `3ddb9b3` to `ac5989e`.
- [Release notes](https://github.com/MikePopoloski/slang/releases)
- [Commits](MikePopoloski/slang@3ddb9b3...ac5989e)

---
updated-dependencies:
- dependency-name: slang
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>