Update aws-c-io to pull in channel setup callback safety update (#591)

bretambrose · Bret Ambrose · web-flow · commit fdf27d09f736 · 2024-01-11T11:14:17.000-08:00
Co-authored-by: Bret Ambrose &lt;bambrose@amazon.com&gt;
diff --git a/crt/aws-c-io b/crt/aws-c-io
@@ -1 +1 @@
-Subproject commit 749c87e551465ff1a3c2e8a77b1181bccff2f4b6
+Subproject commit 6225ebb9da28f1023ad5e21694de9d165cd65f3b
