build(deps): bump third_party/prjxray from `a9b160e` to `bb263ff` (#3371)

Bumps [third_party/prjxray](https://github.com/f4pga/prjxray) from `a9b160e` to `bb263ff`.
- [Commits](https://github.com/f4pga/prjxray/compare/a9b160e4c53f33a357db1c435c229b4d69774d05...bb263ff0311cd05972dbe8d87388422849d66b43)

---
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 a9b160e..bb263ff 160000
--- a/third_party/prjxray
+++ b/third_party/prjxray
@@ -1 +1 @@
-Subproject commit a9b160e4c53f33a357db1c435c229b4d69774d05
+Subproject commit bb263ff0311cd05972dbe8d87388422849d66b43