Bump third_party/slang from f316723 to dcc7ee9

Bumps [third_party/slang](https://github.com/MikePopoloski/slang) from `f316723` to `dcc7ee9`.
- [Release notes](https://github.com/MikePopoloski/slang/releases)
- [Commits](MikePopoloski/slang@f316723...dcc7ee9)

---
updated-dependencies:
- dependency-name: third_party/slang
  dependency-version: dcc7ee97fb14f9be003de71e100d0c9601a993c9
  dependency-type: direct:production
...

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

Author: dependabot[bot]