fix: Update run_with_catch log flushing

[neilramsay]

run_with_catch is flushing the Python standard library logger prior to any traces are printed.

It appears the function logger.shutdown() does not work. Instead each logger handler stream should be flushed individually.

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• ran the linter to address style issues (tox -e fix)
• wrote descriptive pull request text
• ensured there are test(s) validating the fix
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• updated/extended the documentation