chore: update environment variable configuration in render.yaml

- Replaced the hardcoded RENDER_API_KEY with a reference to the environment variable group sf-pulse-env for better security and maintainability.

Author: Ho1yShif

render.yaml

@@ -49,8 +49,7 @@ projects:
             buildCommand: pip install --upgrade uv && uv sync --frozen
             startCommand: uv run python -m bin.trigger_workflow
             envVars:
-              - key: RENDER_API_KEY
-                sync: false
+              - fromGroup: sf-pulse-env
               - key: SF_PULSE_WORKFLOW_SLUG
                 sync: false