Bump kotlin.version from 1.5.0 to 1.5.10 in /value

Bumps `kotlin.version` from 1.5.0 to 1.5.10.

Updates `kotlin-stdlib` from 1.5.0 to 1.5.10
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.5.0...v1.5.10)

Updates `kotlin-maven-plugin` from 1.5.0 to 1.5.10

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

value/src/it/functional/pom.xml

@@ -32,7 +32,7 @@
   <version>HEAD-SNAPSHOT</version>
   <name>Auto-Value Functional Integration Test</name>
   <properties>
-    <kotlin.version>1.5.0</kotlin.version>
+    <kotlin.version>1.5.10</kotlin.version>
     <exclude.tests>this-matches-nothing</exclude.tests>
   </properties>
   <dependencies>