Bump yosys from 91fbd58 to 1e42b4f

Bumps [yosys](https://github.com/YosysHQ/yosys) from `91fbd58` to `1e42b4f`.
- [Release notes](https://github.com/YosysHQ/yosys/releases)
- [Commits](YosysHQ/yosys@91fbd58...1e42b4f)

---
updated-dependencies:
- dependency-name: yosys
  dependency-type: direct:production
...

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