Unit test failures are in sqlalchemy-spanner.
No changes introduced in this PR should cause the unit tests to fail. I believe this is an unrelated issue that is out of scope for this update.

@gemini-code-assist
Are you able to identify the reasons for the failing tests?
I don't need you to generate commits or patches yet. Please just summarize the reasons for the failing tests, if you are able so that we can consider them and determine whether they should be included as "in scope" in this PR or handled in another PR.

@chalmerlowe Thank you for reaching out. Based on the changes introduced in this pull request, which primarily involve updating noxfile.py configurations to use ruff for code formatting and import sorting, there is no direct logical connection to unit test failures in the sqlalchemy-spanner library.

The modifications are confined to the build and formatting tooling, not the functional code of the sqlalchemy-spanner package itself. Therefore, it is highly probable that the unit test failures you are observing are indeed an unrelated issue, as you've already suspected.

Without access to the specific unit test logs or error messages, it's impossible for me to pinpoint the exact cause of the failures. However, if the ruff installation or its execution within the nox environment were to indirectly cause dependency conflicts or environmental issues that affect the test runner, that would be an extremely rare and indirect cause. The most straightforward conclusion, given the nature of these changes, is that the test failures are independent of this PR.

I recommend investigating the sqlalchemy-spanner unit test logs for specific error messages to understand the root cause, as it's likely an issue external to the formatting tool update.