Update Javadoc theme to support more recent JDK versions

Author: marko-bekhta

gradle.properties

@@ -27,11 +27,11 @@ org.gradle.java.installations.auto-download=false
 
 # externalized definition of JDK versions so that they are available in both Project (build.gradle) and Settings (settings.gradle)
 orm.jdk.base=17
-orm.jdk.min=21
+orm.jdk.min=23
 # See gradlew/wrapper/gradle-wrapper.properties, https://docs.gradle.org/current/userguide/compatibility.html#java_runtime
-orm.jdk.max=22
+orm.jdk.max=24
 
 # The minimum version of Gradle supported for the ORM Gradle plugin.
 # This is the version used in the plugin tests, used to make sure we do not break compatibility.
 # See `org.hibernate.orm.tooling.gradle.TestHelper`
-orm.gradle.min=8.14
+orm.gradle.min=8.14

local-build-plugins/src/main/groovy/local.javadoc.gradle

@@ -45,7 +45,7 @@ tasks.withType(Javadoc).configureEach {
         docTitle = "Hibernate Javadocs ($project.name : $project.version)"
         // Pick the styles for the JDK that is used to "build" the Javadocs:
         stylesheetFile = rootProject.layout.buildDirectory.dir("unpacked-theme").get()
-                .dir("hibernate-asciidoctor-theme").dir("javadoc").dir("jdk21").file("stylesheet.css").asFile
+                .dir("hibernate-asciidoctor-theme").dir("javadoc").dir("jdk"+jdkVersions.min.asInt()).file("stylesheet.css").asFile
         bottom = "Copyright &copy; 2001-$currentYear <a href=\"https://redhat.com\">Red Hat, Inc.</a>  All Rights Reserved."
 
         // The javadoc folder contains cached versions of the respective element-list files to avoid release issues when servers are down