Upgrade OpenROAD for ppl fixes

yupferris · yupferris · commit 8fe9e9fd8458 · 2023-03-31T09:21:59.000+02:00
Signed-off-by: Jake Taylor &lt;jake@ascenium.com&gt;
diff --git a/tools/OpenROAD b/tools/OpenROAD
@@ -1 +1 @@
-Subproject commit e18c0d570151a95ebc389254d8baa0eb3cb57f00
+Subproject commit 8a4065b09f5caf8998af059660c63201792a7ea5
