Release mistral RC1 for Antelope

This proposed a RC1 release for mistral to get any merged changes
out prior to the RC1 deadline for Antelope going into effect.

If the team is ready to proceed, please leave a +1 to acknowledge this
release and we will process right away. If the team is working on any
final merges, leave a -1 with some detail on the status and update the
patch with the new commit hash to use when ready.

Patches with no response will be merged by early Friday, March 03.

$ git log --oneline --no-merges 16.0.0.0b1..4289317a
88e7e7ce Adding root_execution_id parameter to mistral loggers
7c357343 Merge mistral tasks data to execution context
3919e6a5 Add an ability to hide sensitive data from http action logs
9c5324ce Add "fields" filter support on single objects
e72a4e9a Task skipping feature

Signed-off-by: Hervé Beraud <hberaud@redhat.com>
Change-Id: I9400fb25df47666c924341fde457797f287fe446

deliverables/antelope/mistral.yaml

@@ -11,3 +11,10 @@ releases:
     projects:
       - repo: openstack/mistral
         hash: 920d6b0336aebf86d321b5aa6e3d26ace6f3ae41
+  - version: 16.0.0.0rc1
+    projects:
+      - repo: openstack/mistral
+        hash: 4289317a914cd2542a23ccc2f3cdcb0d7fd00676
+branches:
+  - name: stable/2023.1
+    location: 16.0.0.0rc1