Remove version pins for ZTK packages which have newer versions in the ZTK

versions.cfg

@@ -9,15 +9,8 @@ ExtensionClass = 2.11.3
 Persistence = 2.11.1
 tempstorage = 2.11.2
 
-# Zope Toolkit KGS
-zope.annotation = 3.4.2
+# Zope Toolkit KGS overrides
 zope.app.publisher = 3.9.0
-zope.app.security = 3.7.1
 zope.container = 3.9.0
-zope.dottedname = 3.4.5
-zope.dublincore = 3.4.3
-zope.intid = 3.7.0
-zope.minmax = 1.1.0
-zope.modulealias = 3.4.0
 zope.publisher = 3.9.0
-zope.site = 3.6.2
+zope.site = 3.6.2       # XXX 3.6.3 breaks for us