Upgrade to Kotlin 1.7.20

Closes gh-32708

Author: wilkinsona

gradle.properties

@@ -4,7 +4,7 @@ org.gradle.caching=true
 org.gradle.parallel=true
 org.gradle.jvmargs=-Xmx2g -Dfile.encoding=UTF-8
 
-kotlinVersion=1.7.10
+kotlinVersion=1.7.20
 tomcatVersion=10.0.23
 nativeBuildToolsVersion=0.9.14