deps: update com.networknt:json-schema-validator to v1.5.6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -37,7 +37,7 @@ jgit = "7.1.0.202411261347-r"
 jiraRestClient = "6.0.1"
 jruby = "9.4.12.0"
 jslt = "0.1.14"
-jsonSchemaValidator = "1.5.5"
+jsonSchemaValidator = "1.5.6"
 kaml = "0.72.0"
 kotest = "5.9.1"
 kotlinPoet = "2.0.0"