bz-62655 update WHATSNEW

WHATSNEW

@@ -8,6 +8,10 @@ Fixed bugs:
    mail task.
    Bugzilla Report 62621
 
+ * augment task now throws a BuildException (as noted in its manual)
+   instead of a IllegalStateException in the absence of the "id" attribute.
+   Bugzilla Report 62655
+
 Other changes:
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  * generatekey task now supports SubjectAlternativeName during key