Upgrade Wombat.JS to 3.9.1 and other Python dependencies, fix recent changes

[benoit74]

Changes (one per commit):

• upgrade wombat to 3.9.1
• upgrade Python dependencies
• fix fixtures not working anymore due to Github Actions not being allowed anymore
• fix Test about badly escaped src in HTML is failing #264

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (cc017df) to head (e902a25).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #263   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           41        41           
  Lines         2512      2511    -1     
  Branches       339       339           
=========================================
- Hits          2512      2511    -1     

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[benoit74]

@rgaudin can you take a quick look please?

[rgaudin]

LGTM ; see what I believe is a typo