upgrading package: kotlin 1.4.21 -> 1.6.0

kotlin/kotlin.spec

@@ -22,8 +22,8 @@
 ##
 
 #   package version
-%define       V_opkg   1.4.21
-%define       V_dist   1.4.21
+%define       V_opkg   1.6.0
+%define       V_dist   1.6.0
 
 #   package information
 Name:         kotlin
@@ -36,7 +36,7 @@ Class:        EVAL
 Group:        Language
 License:      BSD
 Version:      %{V_opkg}
-Release:      20201207
+Release:      20211207
 
 #   list of sources
 Source0:      https://github.com/JetBrains/kotlin/releases/download/v%{V_dist}/kotlin-compiler-%{V_dist}.zip