Upgrade to Kotlin 1.3.70
Upgrade to Kotlin 1.3.70

Includes latest dependency updates (Netty 4.1.47, Jetty 9.4.27, Jackson 2.10.3, Log4J 2.13.1, SnakeYAML 1.26, Vavr 0.10.2, Commons Pool 2.8, POI 4.1.2, OkHttp 3.14.7, Jetty Reactive HttpClient 1.1.2, JRuby 9.2.11, AssertJ 3.15)

spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework