Use pyproject instead of reqs.txt

[granawkins]

update requirements to use pyproject only and use latest spiceai minor version.

[mentatbot]

Using the ~= operator for spiceai dependency will install the latest minor version, but it might introduce breaking changes if not properly managed. Consider specifying a more precise version if stability is a priority.

[mentatbot]

It's good practice to specify the version of actions used in workflows to avoid unexpected changes. For example, consider using actions/checkout@v2 and actions/setup-python@v2.

[mentatbot]

MENTAT CODE REVIEW IN ACTIVE DEVELOPMENT. Only in use on mentat and internal repos.
Please Reply with feedback.

The pull request successfully transitions dependency management to pyproject.toml and removes requirements.txt, aligning with Python packaging best practices. However, consider specifying more precise versions for GitHub Actions to ensure workflow stability. Also, be cautious with the use of the ~= operator for dependencies like spiceai to avoid potential breaking changes with new minor versions.