update code to work with api_version 1.4.8

[rachel-labri-tipton]

Pull Request

Description

updates probabilistic forecast code so there isn't an error when api is rolled back to v1.4.8

How Has This Been Tested?

Ran the code locally.

• [ ] Yes

Checklist:

• [ ] My code follows OCF's coding style guidelines
• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings

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Name	Status	Preview	Comments	Updated (UTC)
nowcasting-app	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 24, 2023 10:47am
nowcasting-website	✅ Ready (Inspect)	Visit Preview		Jul 24, 2023 10:47am