MAINT: Run ruff and address some issues

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.33333% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 87.12%. Comparing base (435037d) to head (d004f3b).

Files	Patch %	Lines
templateflow/api.py	73.68%	5 Missing :warning:
templateflow/conf/__init__.py	73.33%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #119 +/- ## ========================================== - Coverage 87.37% 87.12% -0.25% ========================================== Files 6 6 Lines 301 303 +2 ========================================== + Hits 263 264 +1 - Misses 38 39 +1 ``` | [Flag](https://app.codecov.io/gh/templateflow/python-client/pull/119/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow) | Coverage Δ | | |---|---|---| | [api](https://app.codecov.io/gh/templateflow/python-client/pull/119/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow) | `87.12% <83.33%> (-0.25%)` | :arrow_down: | | [config](https://app.codecov.io/gh/templateflow/python-client/pull/119/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow) | `59.07% <53.70%> (-0.07%)` | :arrow_down: | | [datalad](https://app.codecov.io/gh/templateflow/python-client/pull/119/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow) | `80.19% <70.37%> (-0.21%)` | :arrow_down: | | [dls3](https://app.codecov.io/gh/templateflow/python-client/pull/119/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow) | `63.36% <70.37%> (-0.09%)` | :arrow_down: | | [s3](https://app.codecov.io/gh/templateflow/python-client/pull/119/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow) | `65.67% <70.37%> (-0.11%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=templateflow#carryforward-flags-in-the-pull-request-comment) to find out more.

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