MAINT Fix CI

[adam2392]

Changes proposed in this pull request:

• updates the CI to leverage new spin version v0.10+
• patch some unit-test failures that arise from https://github.com/neurodata/scikit-tree/pull/273/files#diff-f5b103dd1c3449d5467e6833a115f8b2bd1b074cc709ca3a548a696abf165a3e

Follows the pattern suggested in https://github.com/scientific-python/spin

• the current GH actions that generates the coverage report seems to be broken, but may be an issue with versioning and should get patched upstream in coverage, pytest and pytest-cov

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[adam2392]

As 3.9 and 3.10 are no longer supported in the Mac-latest tests, should we remove these two versions?

Can you clarify what you mean? I might've missed the context.

[PSSF23]

@adam2392 It's in the conversation you sent before. They say that they no longer support lower python versions in Mac-latest meson tests.

[PSSF23]

https://github.com/actions/setup-python/issues/855