Set Jack and Jill Douarn 1.3-b6 as stable

Jack version: 383500 a1b2f529b53e58e99788a7c480aae48b24d9acf1
Jill version: 383500 a1b2f529b53e58e99788a7c480aae48b24d9acf1

Bugs fixed since 1.3-b5
Bug: 31863114
Bug: 31543917
Bug: 31239202
Bug: 30801456

Test: was dogfooded

Change-Id: Iaabbe0fd6847fb6df28c31dac3e978e66ddc6f15
4 files changed