build(deps): bump third_party/prjxray from `6f449c6` to `5c0ef1c` (#3822)

Bumps [third_party/prjxray](https://github.com/f4pga/prjxray) from `6f449c6` to `5c0ef1c`.
- [Commits](https://github.com/f4pga/prjxray/compare/6f449c6dda80a13f1e0fb66d870e67738615a255...5c0ef1cc973e3e8631edb8d812a766a8c8477a33)

---
updated-dependencies:
- dependency-name: third_party/prjxray
  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/prjxray b/third_party/prjxray
index 6f449c6..5c0ef1c 160000
--- a/third_party/prjxray
+++ b/third_party/prjxray
@@ -1 +1 @@
-Subproject commit 6f449c6dda80a13f1e0fb66d870e67738615a255
+Subproject commit 5c0ef1cc973e3e8631edb8d812a766a8c8477a33