build(deps): bump third_party/tools/icarus from d8c3c51 to ce7b26e

Bumps [third_party/tools/icarus](https://github.com/steveicarus/iverilog) from `d8c3c51` to `ce7b26e`.
- [Release notes](https://github.com/steveicarus/iverilog/releases)
- [Commits](steveicarus/iverilog@d8c3c51...ce7b26e)

---
updated-dependencies:
- dependency-name: third_party/tools/icarus
  dependency-type: direct:production
...

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