chore: Bump Kotlin and Dokka versions to latest release (#506)

Author: kggilmer

gradle.properties

@@ -15,8 +15,8 @@ android.enableJetifier=true
 sdkVersion=0.5.2-SNAPSHOT
 
 # kotlin
-kotlinVersion=1.5.30
-dokkaVersion=1.4.32
+kotlinVersion=1.5.31
+dokkaVersion=1.5.31
 
 # kotlin libraries
 coroutinesVersion=1.5.1

runtime/runtime-core/build.gradle.kts

@@ -4,7 +4,7 @@
  */
 
 plugins {
-    kotlin("plugin.serialization") version "1.5.30"
+    kotlin("plugin.serialization") version "1.5.31"
 }
 
 description = "Client runtime for Smithy services generated by smithy-kotlin"

smithy-kotlin-codegen/src/main/kotlin/software/amazon/smithy/kotlin/codegen/core/KotlinDependency.kt

@@ -34,7 +34,7 @@ private fun getDefaultRuntimeVersion(): String {
 // publishing info
 const val RUNTIME_GROUP: String = "aws.smithy.kotlin"
 val RUNTIME_VERSION: String = System.getProperty("smithy.kotlin.codegen.clientRuntimeVersion", getDefaultRuntimeVersion())
-val KOTLIN_COMPILER_VERSION: String = System.getProperty("smithy.kotlin.codegen.kotlinCompilerVersion", "1.5.30")
+val KOTLIN_COMPILER_VERSION: String = System.getProperty("smithy.kotlin.codegen.kotlinCompilerVersion", "1.5.31")
 
 // See: https://docs.gradle.org/current/userguide/java_library_plugin.html#sec:java_library_configurations_graph
 enum class GradleConfiguration {