update deploy strategy

[carlosabadia]

No description provided.

[greptile-apps]

Greptile Summary

This PR updates the deployment strategy for the production Reflex website infrastructure from 'rolling' to 'bluegreen' in the cloud-prod.yml configuration file. This is a single-line change that fundamentally alters how deployments are executed in production.

The change switches from a rolling deployment strategy (which updates instances incrementally) to a blue-green deployment strategy (which creates a completely separate environment for the new version before switching traffic). Blue-green deployments provide several advantages: instant rollback capabilities by simply switching traffic back to the previous environment, zero-downtime deployments since the new version is fully tested before traffic switching, and reduced risk of partial failures that can occur during rolling updates.

This change fits into the broader infrastructure management of the Reflex website (pcweb) and represents an evolution toward more robust deployment practices. The modification affects the production deployment pipeline and will require additional infrastructure resources during deployments, as blue-green strategy maintains two complete environments temporarily.

Confidence score: 4/5

• This PR is relatively safe to merge with moderate risk, as it improves deployment robustness but changes critical infrastructure behavior
• Score reflects that while the change is simple and beneficial, it's a significant infrastructure modification for production deployments that could have unexpected implications
• Pay close attention to the cloud-prod.yml file and ensure the deployment infrastructure supports blue-green strategy properly

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