refactor: update markdown to 3.8 and adapt extension code for compatibility

[wgu-ram-chandra]

Purpose

This PR resolves a compatibility issue with the markdown dependency, which surfaced while addressing edx-platform issue #35271.

Background

The edx-platform currently pins markdown to <3.4.0. When attempting to lift that constraint and upgrade markdown to the latest version (3.8), tests in this repository failed due to breaking changes introduced in markdown>=3.4.0.

As outlined in the markdown 3.4 release notes, key breaking changes include:

• Removal of the md_globals parameter from Extension.extendMarkdown()
• Replacing the .add() method with .register() in processor registration
• Changing the argument order and priority system in processor registration
• Refactoring of markdown.util.etree to use the standard library's xml.etree.ElementTree

Below is a sample illustration of changes from the 3.4 release notes

Changes Made

• Upgraded markdown to version 3.8 in base.in and test.in

• Refactored custom Markdown extensions to:

  • Remove deprecated md_globals usage
  • Replace add() with register() for preprocessor and treeprocessor registration
  • Use integer-based priority values instead of deprecated string-based values (e.g., '>inline', '>html_block')

• Ensured compatibility with the updated Markdown processing API

• Verified all tests pass after the upgrade

Follow-Up

Once this PR is merged, it will unblock and help resolve:
edx-platform issue #35271

References

• https://github.com/Python-Markdown/markdown/blob/3.4/docs/change_log/release-3.4.md
• https://github.com/Python-Markdown/markdown/tree/master/markdown

[UsamaSadiq]

You need to run make upgrade using Python 3.12 env to keep the requirements consistent across all open edX repositories.
Other than that the changes look good to merge.

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[wgu-ram-chandra]

Hi @UsamaSadiq, earlier when I ran make upgrade, it also upgraded some other dependencies like tox and pluggy, which I wasn’t expecting. I had started cleaning that up but stepped away from my computer. I've now re-run make upgrade correctly and pushed the updated changes. Let me know if there's anything else you'd like me to adjust!

[UsamaSadiq]

Looks good to merge.

[wgu-ram-chandra]

Thanks @UsamaSadiq! Could you please merge this PR when you get a chance? I don’t have the necessary permissions to do so.

[UsamaSadiq]

Sure. You may also need to bump the package version if you need this package updated in edx-platform.
Update package CHANGE LOG and bump version in __init__.py file and I'll go ahead and merge it.

[wgu-ram-chandra]

Hi @UsamaSadiq, I’ve made the changes you requested, including bumping the version in setup.py and adding a changelog for the release. Please have a look and let me know if everything looks good or if any further updates are needed.

[UsamaSadiq]

package version https://pypi.org/project/openedx-django-wiki/3.1.1/ has been released with this change on PyPI

[wgu-ram-chandra]

Thank you @UsamaSadiq!