[FUTURE] Cut down deployment times for labs

[mithunshanbhag]

Feedback from Build Conference 2023 was that lab deployments were time-consuming.

Root cause: All first-time deployments are time-consuming because the ACA environments for internal endpoints take a long time to get provisioned. This is problematic for the lab scenarios, where practically all deployments are first-time deployments.

Mitigation: Let's evaluate whether the provisioning of ACA internal endpoints can be made optional/conditional using bicep, GH workflow, et al.