Bump klaxon from 5.5 to 5.6

Bumps [klaxon](https://github.com/cbeust/klaxon) from 5.5 to 5.6.
- [Release notes](https://github.com/cbeust/klaxon/releases)
- [Changelog](https://github.com/cbeust/klaxon/blob/master/RELEASE_NOTES.txt)
- [Commits](cbeust/klaxon@5.5...5.6)

---
updated-dependencies:
- dependency-name: com.beust:klaxon
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -73,7 +73,7 @@ dependencies {
   implementation("org.yaml:snakeyaml:2.2")
   implementation("com.squareup.moshi:moshi:1.15.1")
   implementation("com.squareup.moshi:moshi-kotlin:1.15.1")
-  testImplementation("com.beust:klaxon:5.5")
+  testImplementation("com.beust:klaxon:5.6")
 
   implementation("com.google.re2j:re2j:1.7")
 //    implementation("com.github.fge:json-schema-validator:2.2.6")