Fix CI issues due to old conda version

[freemansw1]

This continues the work from #457 and fixes issues with a few of our CI workflows that broke from miniconda being depreciated.

Note that this is a PR to main per our policy of CI improvements

• [ ] Have you followed our guidelines in CONTRIBUTING.md?
• [ ] Have you self-reviewed your code and corrected any misspellings?
• [ ] Have you written documentation that is easy to understand?
• [ ] Have you written descriptive commit messages?
• [ ] Have you added NumPy docstrings for newly added functions?
• [ ] Have you formatted your code using black?
• [ ] If you have introduced a new functionality, have you added adequate unit tests?
• [ ] Have all tests passed in your local clone?
• [ ] If you have introduced a new functionality, have you added an example notebook?
• [ ] Have you kept your pull request small and limited so that it is easy to review?
• [ ] Have the newest changes from this branch been merged?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 60.67%. Comparing base (343243f) to head (203e4fd). Report is 6 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #465 +/- ## ========================================== - Coverage 60.72% 60.67% -0.06% ========================================== Files 23 23 Lines 3537 3537 ========================================== - Hits 2148 2146 -2 - Misses 1389 1391 +2 ``` | [Flag](https://app.codecov.io/gh/tobac-project/tobac/pull/465/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tobac-project) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/tobac-project/tobac/pull/465/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tobac-project) | `60.67% <ø> (-0.06%)` | :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=tobac-project#carryforward-flags-in-the-pull-request-comment) to find out more.

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[freemansw1]

The notebook CI is failing due to an upstream issue with pyart that has been fixed and will be released as part of their next version (https://github.com/ARM-DOE/pyart/pull/1623). As a temporary fix, I've copied their fix over to pin xarray versions to <2024.10.0.

I have no clue what is happening to the lining workflow. I've tried to partially roll it back, but it seems to always grab the old version of the file. I'd appreciate some help here, if someone wants to take a look.

[freemansw1]

I have no clue what is happening to the lining workflow. I've tried to partially roll it back, but it seems to always grab the old version of the file. I'd appreciate some help here, if someone wants to take a look.

Okay, apparently this is expected behavior: https://github.com/orgs/community/discussions/122045 . I suppose we just must trust that the CI will pass?