fix: cast port to int

[orarbel]

Background

When executing port = os.getenv("PORT", 8000) if the port is being fetched from a .env file it is fetched as a string.

This causes an error: TypeError: 'str' object cannot be interpreted as an integer

Changes 🏗️

The port is casted to int before passed to uvicorn

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[Swiftyos]

LGTM thank you