Fail if formatters have made changes (#218)

Pass python version to uv (#216)

This change reverts the use of `python=False` in all nox sessions.
Sessions for tests, linting, and formatting will use nox virtual
environments. In these sessions the location of the virtual environment
will be passed to `uv run` and `uv sync`. This means uv will use the
python version that nox is executed with.

This change is needed because nox correctly masks all environment
variables when starting a `session.run` or `session.run_install`. This
is ideal to maintain repeatable behavior. This is not ideal when
attempting to use `UV_PYTHON` to control which version is being run.

Enforcing that uv use the python version that nox is executed with is
the least surprising behavior. Even if this ignores the
`.python-version` file in the repo.

Clean up gha python setup (#214)

* Remove settings job

Turns out the setup-python action already looks for and respects the
`.python-version` pin. Easy mode.

* Use correct python version

* Remove python-setup

* Remove only system flag

* no-config parameter is not needed

Rename test dep group to dev (#210)

A dev should always have the dependencies is this group installed. uv
will automatically install the dev group so renaming is the simple
solution.

Guard against uv.lock drift (#208)

Add a pre-commit hook to ensure the lockfile has been updated with any
dependency changes. Likewise, create a nox session to do the same.

This combination will help ensure the uv.lock file is correct even when
pushed before updating. pre-commit-ci can auto-fix this.

Include ./tests in nox lint session (#200)

* Simplify install steps

* Handle running lint session on tests/

Merge pull request #171 from Preocts/preocts

Update supported versions

Merge pull request #110 from Preocts/preocts

Clean up tox config

Merge pull request #97 from Preocts/preocts

Refinement of the template

Merge pull request #79 from Preocts/preocts

show dev and test optionals in dev install steps