build(deps): bump third_party/tools/icarus from 23a7c80 to 27bae7e

Bumps [third_party/tools/icarus](https://github.com/steveicarus/iverilog) from `23a7c80` to `27bae7e`.
- [Release notes](https://github.com/steveicarus/iverilog/releases)
- [Commits](steveicarus/iverilog@23a7c80...27bae7e)

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

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