Revert "Moved native to 1.5.31-dev-447 (#152)"

This reverts commit c9dda21d.

samples/SkiaNativeSample/build.gradle.kts

 plugins {
-    kotlin("multiplatform") version "1.5.30"
+    kotlin("multiplatform") version "1.5.21"
 }
 
 repositories {

samples/SkiaNativeSample/gradle.properties

 kotlin.code.style=official
-kotlin.native.version=1.5.31-dev-447
+kotlin.native.version=1.5.21-dev-329
 kotlin.native.cacheKind.macosX64=none

skiko/build.gradle.kts

@@ -5,7 +5,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jetbrains.kotlin.gradle.tasks.KotlinNativeCompile
 
 plugins {
-    kotlin("multiplatform") version "1.5.30"
+    kotlin("multiplatform") version "1.5.10"
     `cpp-library`
     `maven-publish`
     id("org.gradle.crypto.checksum") version "1.1.0"

skiko/gradle.properties

 kotlin.code.style=official
 deploy.version=0.0.0
-kotlin.native.version=1.5.31-dev-447
+kotlin.native.version=1.5.21-dev-329
 
 dependencies.skia.windows-x64=m93-87e8842e8c
 dependencies.skia.linux-x64=m93-87e8842e8c