Bump kotlin.version from 1.4.30 to 1.4.31

Bumps `kotlin.version` from 1.4.30 to 1.4.31.

Updates `kotlin-stdlib` from 1.4.30 to 1.4.31
- [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 1.4.30 to 1.4.31
Signed-off-by: Ndependabot[bot] <support@github.com>

pom.xml

@@ -94,7 +94,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-		<kotlin.version>1.4.30</kotlin.version>
+		<kotlin.version>1.4.31</kotlin.version>
 		<kotlin.coroutine.version>1.4.2</kotlin.coroutine.version>
 	</properties>