Describe the bug
This commit introduced a bug I'm pretty sure: 9ead9c8

To reproduce

from sagemaker.model import Model

model = Model(...)

model.deploy(
    ...,
    update_endpoint=True, # <--- bug here
)

Screenshots or logs
TypeError: Session.create_endpoint_config() got an unexpected keyword argument 'serverless_inference_config'. Did you mean 'serverless_inference_config_dict'?

System information
A description of your system. Please provide:

• SageMaker Python SDK version: 2.244.0
• Framework name (eg. PyTorch) or algorithm (eg. KMeans):
• Framework version:
• Python version: 3.12.10
• CPU or GPU:
• Custom Docker image (Y/N):

Additional context
Add any other context about the problem here.