Add assigned bug ID for Java 22 XML parsing bug

At the time of commit 4e9d086, only an "internal review ID"
was available for the reported bug in parsing a minimal-DTD
document with Java 22's new jdk.xml.dtd.support=ignore
in effect.

Add the assigned ID JDK-8329295 for the bug.

pljava-examples/src/main/java/org/postgresql/pljava/example/annotation/PassXML.java

@@ -291,10 +291,9 @@
 	/*
 	 * A truly minimal DTD, <!DOCTYPE a>, cannot be ignored by Java 22's SAX/DOM
 	 * parser (though it can be, when using the StAX API). NullPointerException
-	 * calling getActiveGrammar().isImmutable() is the result. Reported on
-	 * bugreport.java.com but still awaiting assignment of a bug ID. Including
-	 * either an externalID or an internal subset (like the empty [] here)
-	 * avoids the issue.
+	 * calling getActiveGrammar().isImmutable() is the result. Bug: JDK-8329295
+	 * Including either an externalID or an internal subset (like the empty []
+	 * here) avoids the issue.
 	 */
 	"   '<!DOCTYPE a []><a/>'::xml, how, params) IS DOCUMENT" +
 	" FROM" +