build(deps): bump third_party/yosys from `8596c5c` to `236e15f` (#2177)

Bumps [third_party/yosys](https://github.com/YosysHQ/yosys) from `8596c5c` to `236e15f`.
- [Release notes](https://github.com/YosysHQ/yosys/releases)
- [Commits](https://github.com/YosysHQ/yosys/compare/8596c5ce4915d1727d93df45fc58047f08886b41...236e15f3b06fc4a05143399cf10b682996d5c509)

---
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 8596c5c..236e15f 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit 8596c5ce4915d1727d93df45fc58047f08886b41
+Subproject commit 236e15f3b06fc4a05143399cf10b682996d5c509