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-maven-plugin` from 1.3.50 to 1.3.60

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

Author: dependabot-preview[bot]

pom.xml

@@ -38,7 +38,7 @@
     <spring.batch.version>4.2.0.RELEASE</spring.batch.version>
     <clirr.comparisonVersion>1.1.0</clirr.comparisonVersion>
     <module.name>org.mybatis.dynamic.sql</module.name>
-    <kotlin.version>1.3.50</kotlin.version>
+    <kotlin.version>1.3.60</kotlin.version>
     <kotlin.compiler.jvmTarget>1.8</kotlin.compiler.jvmTarget>
     <sonar.sources>pom.xml,src/main/java,src/main/kotlin</sonar.sources>
     <sonar.tests>src/test/java,src/test/kotlin</sonar.tests>