chore: bump snapshot version to 0.12.3-SNAPSHOT

Author: aws-sdk-kotlin-ci

gradle.properties

@@ -9,7 +9,7 @@ kotlin.native.ignoreDisabledTargets=true
 kotlin.mpp.hierarchicalStructureSupport=false
 
 # SDK
-sdkVersion=0.12.2
+sdkVersion=0.12.3-SNAPSHOT
 
 # kotlin
 kotlinVersion=1.7.0