Istio docker images are running on Buster, so it would be nice to upgrade to Bullseye.
Overall Istio steps:
- Build new docker images and push them to the registry
- Rollout the new images to staging envs and evaluate
- Rollout to prod
Overall Cert Manager steps:
- Build new docker images and push them to the registry
- Rollout the new images to staging envs and evaluate
- Rollout to prod