upgrade(sample): 同步kotlin插件版本

build.gradle

@@ -18,7 +18,7 @@
 
 buildscript {
     ext {
-        kotlin_version = '1.5.21'
+        kotlin_version = '1.6.21'
         brv_version = '1.3.79'
         coroutine_version = '1.6.0'
         glide_version = '4.11.0'