[neutron] New 2023.1 (Antelope) neutron-lib release 3.4.2

$ git log --oneline --no-merges 3.4.1..1e0f5983
1e0f5983 Add the "cancellable" flag to the ``CallbacksManager`` events

Change-Id: Ieb46c4593120daf9f34883bd3ebee5d8639b2c21

deliverables/antelope/neutron-lib.yaml

@@ -23,6 +23,10 @@ releases:
     projects:
       - repo: openstack/neutron-lib
         hash: 86ea887de64bba3d48a245884aea961b04afad0a
+  - version: 3.4.2
+    projects:
+      - repo: openstack/neutron-lib
+        hash: 1e0f5983ccfa9b0c04e17a01876eed10187ec1ee
 branches:
   - name: stable/2023.1
     location: 3.4.0