Scan_delta parameters are now lowercase since 1.14.0 for S3

[TinoSM]

Description

Maybe it also applies for Azure and GCP

storage_options = {
    "AWS_REGION": "eu-central-1",
    "AWS_ACCESS_KEY_ID": "THE_AWS_ACCESS_KEY_ID",
    "AWS_SECRET_ACCESS_KEY": "THE_AWS_SECRET_ACCESS_KEY",
}

Since this change, the keys are now lowercase:
#19103

storage_options = {
    "aws_region": "eu-central-1",
    "aws_access_key_id": "THE_AWS_ACCESS_KEY_ID",
    "aws_secret_access_key": "THE_AWS_SECRET_ACCESS_KEY",
}

or you will get

polars.exceptions.ComputeError: unknown configuration key: AWS_ACCESS_KEY_ID

Link

https://docs.pola.rs/api/python/stable/reference/api/polars.scan_delta.html