Get scalar-fastapi package from PyPI instead of GitHub

[eecavanna]

Previously, in pyproject.toml, we were telling uv we wanted it to get the scalar-fastapi package from GitHub.

bertron/pyproject.toml

Lines 48 to 52 in 2c7eb87

	# Note: We use `scalar-fastapi` to integrate Scalar API documentation with FastAPI.
	# Note: We use a Git URL to install the `scalar-fastapi` package, because the Scalar
	# maintainers have not published recent versions of the package to PyPI yet.
	# Reference: https://github.com/scalar/scalar/issues/5337#issuecomment-2781011096
	"scalar-fastapi @ git+https://github.com/scalar/scalar/#subdirectory=integrations/fastapi",

We did that at a time when the Scalar maintainers were not keeping their PyPI project up to date. Now that they are keeping it up to date, we can get new versions of the package from there instead.

That's the change I made on this branch.

I tested the result by visiting /scalar locally and confirming the Scalar API docs still appear.

[jeff-cohere]

Looks good! I left one minor question.