scip-kotlinc Kotlin update, fixes and improvements #146

Job	Run time
Build scip-java CLI	4m 29s
gradle-kotlin-kotlinpoet	2m 44s
maven-java25-demo	2m 20s
maven-java17-spring-boot	2m 50s
gradle-mixed-kotlinpoet-jmh	4m 4s
gradle-kotlin-kotlinconf-app	4m 5s
bazel-java-examples	1m 32s
maven-kotlin-json-kotlin-maven	2m 49s
gradle-java21-readiness	1m 38s
	26m 31s

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