build(deps): bump third_party/tools/yosys from 29e8812 to 98b4aff

Bumps [third_party/tools/yosys](https://github.com/YosysHQ/yosys) from `29e8812` to `98b4aff`.
- [Release notes](https://github.com/YosysHQ/yosys/releases)
- [Commits](YosysHQ/yosys@29e8812...98b4aff)

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

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