[jdks] Use explicit task dependencies in Gradle tasks

plugins/jdks-gradle-plugin/src/main/groovy/org/jreleaser/jdks/gradle/plugin/JdksPlugin.groovy

@@ -132,6 +132,7 @@ class JdksPlugin implements Plugin<Project> {
                     t.description = "Verify JDK ${jdk.name}".toString()
                     t.enabled = !jdksToBeCopied.find { it.archiveFileName == jdkArchiveFileName }
                     t.dependsOn(jdk.downloadTask)
+                    t.inputs.file(jdk.downloadTask.get().dest)
 
                     String algorithm = 'SHA-256'
                     String checksum = jdk.checksum.get()