oslo.service 1.31.6

We noticed high CPU usage in Rocky, it's caused by
inefficient code in oslo.service causing many useless system calls:
change: I62e9f1a7cde8846be368fbec58b8e0825ce02079

$ git log --no-merges 1.31.5.. --online
6566ec5 Use eventlet Event for loopingcall events
6a7d05d Fix stop of loopingcall
23dc8c0 Stop asserting on Eventlet internals

Change-Id: I1f0c4856e939bfa76e90542efc5091a4a9baa9a4

deliverables/rocky/oslo.service.yaml

@@ -37,6 +37,10 @@ releases:
         hash: 67a8a8c7f5c606bd1ef394069d6a4969d21ae3a5
         repo: openstack/oslo.service
     version: 1.31.5
+  - projects:
+      - hash: 6566ec5e4b143f47a835223e5bcbe68766c52f7a
+        repo: openstack/oslo.service
+    version: 1.31.6
 branches:
   - location: 1.31.3
     name: stable/rocky