collab: Use `StripeClient` when creating Stripe Checkout sessions (#31644)
This PR updates the `StripeBilling::checkout_with_zed_pro` and
`StripeBilling::checkout_with_zed_pro_trial` methods to use the
`StripeClient` trait instead of using `stripe::Client` directly.
Release Notes:
- N/A
eb863f8fd6Marshall Bowers committed on 5/29/2025, 12:57:04 AM· committed by GitHubparent9757966