RENDER_PYTHON_VERSION in render.yaml is not applied to build

Hello.
I’m trying to deploy a service using a Blueprint (render.yaml).
In my render.yaml file, I have set RENDER_PYTHON_VERSION to “3.12” under envVars. However, every build attempt still uses the default Python version 3.13.4. This causes my build to fail due to a dependency conflict.
I believe this is a platform-side issue because I have already tried recreating the service from the Blueprint and clearing the build cache, but the setting is still ignored.
Could someone from the Render team please investigate why the RENDER_PYTHON_VERSION setting from my render.yaml is not being applied to the build process?

Service Name: lawsy
Repository: GitHub - amamiyax17/lawsy: Making Law Easy
Link to the failing deploy log: Render · The Easiest Cloud For All Your Apps

Thank you.

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