chore: revert "feat: upgrade to Kotlin 2.2.0 (#96)" (#99)

Author: ianbotsf

build.gradle.kts

@@ -4,7 +4,6 @@
  */
 plugins {
     `maven-publish`
-    alias(libs.plugins.kotlin.jvm) apply false
 }
 
 val releaseVersion = findProperty("release.version") as? String

gradle.properties

@@ -1 +1,4 @@
 kotlin.code.style=official
+
+# kotlin
+kotlinVersion=2.1.0

gradle/libs.versions.toml

@@ -1,5 +1,4 @@
 [versions]
-kotlin-version = "2.2.0"
 ktlint = "1.3.0"
 smithy-version = "1.60.2"
 smithy-gradle-plugin-version = "1.3.0"
@@ -17,5 +16,4 @@ smithy-gradle-base-plugin = { module = "software.amazon.smithy.gradle:smithy-bas
 junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-version" }
 
 [plugins]
-kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin-version" }
 plugin-publish = { id = "com.gradle.plugin-publish", version = "1.3.1"}

settings.gradle.kts

@@ -9,6 +9,12 @@ pluginManagement {
         mavenCentral()
         gradlePluginPortal()
     }
+
+    val kotlinVersion: String by settings
+    // configure default plugin versions
+    plugins {
+        id("org.jetbrains.kotlin.jvm") version kotlinVersion
+    }
 }
 
 dependencyResolutionManagement {