build(deps): bump third_party/yosys from `fa0c311` to `4581f75` (#2465)

Bumps [third_party/yosys](https://github.com/YosysHQ/yosys) from `fa0c311` to `4581f75`.
- [Release notes](https://github.com/YosysHQ/yosys/releases)
- [Commits](https://github.com/YosysHQ/yosys/compare/fa0c3118626ab67d8b32ba2516953af8181c960d...4581f75b03a25b615a9715516854c424b580f7ab)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/third_party/yosys b/third_party/yosys
index fa0c311..4581f75 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit fa0c3118626ab67d8b32ba2516953af8181c960d
+Subproject commit 4581f75b03a25b615a9715516854c424b580f7ab