Revert kotlin version update

Den-Rimus · Den-Rimus · commit 7b170773f5b1 · 2021-12-15T17:06:01.000+01:00
diff --git a/Libraries.txt b/Libraries.txt
@@ -48,7 +48,7 @@ limitations under the License.
 
 Kotlin Standard Library
 
-Version 1.5.20
+Version 1.4.20
 (https://github.com/JetBrains/kotlin)
 
 Copyright 2010-2018 JetBrains s.r.o.
diff --git a/build.gradle b/build.gradle
@@ -3,7 +3,7 @@ buildscript {
     ext.compileVersion = 30
     ext.targetVersion = 30
     ext.minVersion = 21
-    ext.kotlin_version = "1.5.20" // use the same version as SDK does
+    ext.kotlin_version = "1.4.20" // use the same version as SDK does
     ext.sdkVersion = "3.0.8"
 
     repositories {
