Add few suppressions in order to silence the IDE #345

Job	Run time
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-jvm-okhttp-multipart-json)	1m 17s
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-jvm-spring-3-restclient)	1m 23s
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-model-prefix-type-mappings)	1m 19s
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-jvm-okhttp)	1m 31s
	5m 30s

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