Release v1.2.3 on 2022-06-28.

1. 102c81c Enable parallel make in make distcheck by Pau Espin Pedrol · 3 years, 9 months ago
2. d160a73 contrib/jenkins.sh: run "make maintainer-clean" by Oliver Smith · 5 years ago
3. 134d0a3 Add '--enable-sanitize' from other osmocom projects by Harald Welte · 7 years ago
4. 66a60a1 Add contrib/jenkins.sh for jenkins build verification by Harald Welte · 7 years ago