update pytorch/third-party to official 2.3.1 release tag

mcr229 · mergennachin · commit 53ca076aaa1e · 2024-06-06T11:29:45.000-04:00
diff --git a/third-party/pytorch b/third-party/pytorch
@@ -1 +1 @@
-Subproject commit d44533f9d073df13895333e70b66f81c513c1889
+Subproject commit 63d5e9221bedd1546b7d364b5ce4171547db12a9
