Update stdarch submodule

Amanieu · Mark-Simulacrum · commit 3e109787af3c · 2020-03-21T17:01:12.000-04:00
diff --git a/src/stdarch b/src/stdarch
@@ -1 +1 @@
-Subproject commit dea57529b3695605909e7d327bb6551d7a10c788
+Subproject commit abe96ca3b87fcca6aa1dfcefd40d8c8d92d2e673
