Bump kotlin_version from 1.3.71 to 1.3.72

Bumps `kotlin_version` from 1.3.71 to 1.3.72.

Updates `kotlin-gradle-plugin` from 1.3.71 to 1.3.72
- [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-stdlib-jdk7` from 1.3.71 to 1.3.72
- [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

)

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