Update dependency org.openapitools:openapi-generator-core to v7.13.0

Author: renovate[bot]

build.gradle

@@ -226,7 +226,7 @@ dependencies {
 
   implementation group: 'io.rest-assured', name: 'rest-assured', version: '5.5.1'
 
-  implementation 'org.openapitools:openapi-generator-core:7.12.0'
+  implementation 'org.openapitools:openapi-generator-core:7.13.0'
   implementation 'org.hibernate.validator:hibernate-validator:8.0.2.Final'
 
   testImplementation(platform('org.junit:junit-bom:5.12.2'))