Fix leadership page not loading members

[dragid10]

Issue Link 🔗: #774

Issue: #744

Type of Change

• Bug fix 🐞
• New feature/page
• Documentation update
• Other

Description 📋

What:

The about.html page was unable to load the actual member details because we stopped loading the yaml. To fix this, we converted the leadership.yaml file to leadership.json instead (to match the other data files) and load the json file in

Changes:

• Transform leadership.yaml to leadership.json: Fixes about.html page
• Remove Yaml-frontmatter pre-commit hook: It doesn't seem that we're actually loading any yaml data anymore, so there doesn't really seem to be a need to check for the frontmatter

Checklist ✅

• Followed the Code of Conduct and Contribution Guide
• Ran pre-commit run --all
• All tests pass locally
• Added tests (if applicable)
• Documentation updated (if applicable)

Additional Notes & Screenshots

Add any additional notes or comments that might be helpful for the reviewers.

[dragid10]

Weirdly enough, I'm not allowed to add the @BlackPythonDevs/devteam as reviewers 🤔
It doesn't come up as an option for me

[kjaymiller]

Thanks for getting this fixed.

I'm going to push onto that we can have the information returned.