bump smithy version

Author: lauzadis

gradle/libs.versions.toml

@@ -17,7 +17,7 @@ crt-kotlin-version = "0.8.9"
 micrometer-version = "1.13.2"
 
 # codegen
-smithy-version = "1.50.0"
+smithy-version = "1.51.0"
 smithy-gradle-version = "0.9.0"
 
 # testing