Upgrade to Kotlin 1.7.21

Closes gh-29543

Author: sdeleuze

gradle.properties

@@ -4,6 +4,6 @@ org.gradle.caching=true
 org.gradle.jvmargs=-Xmx2048m
 org.gradle.parallel=true
 
-kotlinVersion=1.7.20
+kotlinVersion=1.7.21
 
 kotlin.stdlib.default.dependency=false