Update dependency org.openapitools:openapi-generator-gradle-plugin to v7.14.0 (#410)

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 kotlin = "2.1.20"
 dokka = "2.0.0"
-openapi-generator = "7.12.0"
+openapi-generator = "7.14.0"
 jupyter-api = "0.12.0-398"
 jupyter-testkit = "0.12.0-398"
 jupyter-plugin = "0.12.0-398"