Changes to CI pipeline minutes for new free users

What this post added

Introduced a change to CI pipeline minutes for new free users, setting a limit of 2000 minutes per group per month. This change is driven by efficiency goals and analysis of free user CI minute consumption. The post also outlines options for users who need more minutes (purchasing additional minutes or using self-hosted runners) and mentions upcoming CI improvements like Windows/MacOS runners, dynamic child pipeline creation, autoscaling on AWS Fargate, and pipeline failure notifications.