Update dicom-validator to 0.9

[p-j-smith]

Description

Part of #665

• update dicom-validator to 0.9
• use the EditionReader.get_edition_path to download the dicom spec
• update pixl_dcmd.dicom_helpers:
  • IODValidator.validate() now returns a ValidationResult class rather than a dictionary
  • IODValidator.validate() no longer raises a RuntimeError if DICOM cannot be validated (so essentially revert Allow CLI to retry processing until no new messages are exported #393 as dicom-validator never raises a RuntimeError now)
  • Use the new ValidationResultFormatter class to convert the TagError class into a human readable string
• update pixl_dcmd tests for dicom-validator 0.9:
  • test_validate_original_survives_runtime_error → test_validate_original_reports_malformed_sequence: a malformed sequence tag is now reported as InvalidSequence error rather than raising a RuntimeError
  • add a new fixture and tests for datasets dicom-validator still can't validate, e.g. missing SOPClassUID

Type of change

Please delete options accordingly to the description.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Suggested Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have commented my code, particularly in hard-to-understand areas.
• I have passed on my local host device. (see further details at the CONTRIBUTING document)
• Make sure your branch is up-to-date with main branch. See CONTRIBUTING for a general example to syncronise your branch with the main branch.
• I have requested review to this PR.
• I have addressed and marked as resolved all the review comments in my PR.
• Finally, I have selected squash and merge

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.40%. Comparing base (8c4fc61) to head (d7dec18).

Additional details and impacted files

@@                  Coverage Diff                   @@
##           paul/665-pydicom-3     #675      +/-   ##
======================================================
+ Coverage               85.43%   88.40%   +2.97%     
======================================================
  Files                      77       81       +4     
  Lines                    3679     3966     +287     
======================================================
+ Hits                     3143     3506     +363     
+ Misses                    536      460      -76     

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[stefpiatek]

🎉 thanks!