As per victoria cycle testing runtime and community goal[1] we need to migrate upstream CI/CD to Ubuntu Focal(20.04). Fixing: - bug#1886298 Bump the lower constraints for required deps which added python3.8 support in their later version. Story: #2007865 Task: #40207 Closes-Bug: #1886298 [1] https://governance.openstack.org/tc/goals/selected/victoria/migrate-ci-cd-jobs-to-ubuntu-focal.h> Change-Id: Id3df43c47a3bdfce317331e1e3e4df775c4b4f32tags/3.3.0