build(deps): bump third_party/tools/slang from 25702b8 to 284e72b

Bumps [third_party/tools/slang](https://github.com/MikePopoloski/slang) from `25702b8` to `284e72b`.
- [Release notes](https://github.com/MikePopoloski/slang/releases)
- [Commits](MikePopoloski/slang@25702b8...284e72b)

---
updated-dependencies:
- dependency-name: third_party/tools/slang
  dependency-version: 284e72b60305e34802507db3c0e1e609a1b8cdec
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]