While Poetry does now support PEP 508, it's still common to use
`tool.poetry.dependencies` - we for example still use it because
Renovate does not support doing lockfile updates for Poetry when using
PEP 508.
This modifies the version finder logic to support determining the Ruff
version from `pyproject.toml` files that use ``tool.poetry.dependencies`
I'd quite like to use `ruff-action`'s auto-detection feature, but it
currently doesn't read the `[project.optional-dependency]` table, and
support for the PEP 735 `[dependency-groups]` table is currently limited
to only the special-cased `dev` key, and does not account for the
possibility of `{include-group="..."}` inline tables, as [described by
the PEP](https://peps.python.org/pep-0735/#dependency-group-include).
I have guessed how to make the tests work, as the only JS development I
do is plain JS (sans frameworks), so TypeScript is still quite new to me
-- feel free to push required changes to this branch.
A
Closes: #9
Changes the default behavior to:
- Search for a pyproject.toml in the repo root
- Search in project.dependencies and dependency-groups.dev for ruff
- If none is found use latest
Support for requirements.txt files can be added later
