⬆️ Bump kotlin.version from 1.3.50 to 1.3.60

Bumps `kotlin.version` from 1.3.50 to 1.3.60.

Updates `kotlin-stdlib-jdk8` from 1.3.50 to 1.3.60
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/commits)

Updates `kotlin-reflect` from 1.3.50 to 1.3.60
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/commits)

Updates `kotlin-maven-plugin` from 1.3.50 to 1.3.60

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

pom.xml

@@ -42,7 +42,7 @@
 	<properties>
 		<java.version>11</java.version>
 		<junit-jupiter.version>5.5.2</junit-jupiter.version>
-		<kotlin.version>1.3.50</kotlin.version>
+		<kotlin.version>1.3.60</kotlin.version>
 	</properties>
 
 	<dependencies>