Upgrade to Kotlin Coroutines 1.3.0

Closes gh-17907

Author: wilkinsona

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -143,7 +143,7 @@
 		<junit-jupiter.version>5.5.1</junit-jupiter.version>
 		<kafka.version>2.3.0</kafka.version>
 		<kotlin.version>1.3.41</kotlin.version>
-		<kotlin-coroutines.version>1.3.0-RC2</kotlin-coroutines.version>
+		<kotlin-coroutines.version>1.3.0</kotlin-coroutines.version>
 		<lettuce.version>5.1.8.RELEASE</lettuce.version>
 		<liquibase.version>3.7.0</liquibase.version>
 		<log4j2.version>2.12.0</log4j2.version>