Update dependency importlib_resources to v5.8.0

This MR contains the following updates:

Package	Type	Update	Change
importlib_resources	ironbank-pypi	minor	5.7.1 -> 5.8.0

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Release Notes

python/importlib_resources

v5.8.0

Compare Source

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• #​250: Now Traversable.joinpath provides a concrete implementation, replacing the implementation in .simple and converging with the behavior in MultiplexedPath.

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