Merge pull request #116 from openapi-processor/dependabot/gradle/kotlin-2.0.21

Bump kotlin from 2.0.20 to 2.0.21

Author: hauner

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ openapiparser = "2024.5-SNAPSHOT"
 build-jdk = "11"
 test-jdk = "17"
 
-kotlin = "2.0.20"
+kotlin = "2.0.21"
 checker = "3.48.0"
 checkerp = "0.6.43"
 jacoco = "0.8.11"