Bump jvm from 1.5.31 to 1.6.0

Bumps jvm from 1.5.31 to 1.6.0.

---
updated-dependencies:
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle.kts

@@ -9,7 +9,7 @@ plugins {
     jacoco
     application
     distribution
-    kotlin("jvm") version "1.5.31"
+    kotlin("jvm") version "1.6.0"
     id("com.github.spotbugs") version "4.7.9"
     id("com.diffplug.spotless") version "6.0.0"
     id("com.github.kt3k.coveralls") version "2.12.0"