Bump Smithy version to 1.69.0 (#650)

Madrigal · web-flow · commit 0d0b4d00f243 · 2026-04-21T17:36:29.000-04:00
diff --git a/codegen/gradle.properties b/codegen/gradle.properties
@@ -1,2 +1,2 @@
-smithyVersion=1.67.0
+smithyVersion=1.69.0
 smithyGradleVersion=0.7.0
