Update libxml for CVEs

[sjberman]

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes,
please add a brief note that summarizes the change.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.78%. Comparing base (702fe0f) to head (bf8a754).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3416      +/-   ##
==========================================
- Coverage   86.83%   86.78%   -0.05%     
==========================================
  Files         127      127              
  Lines       15020    15020              
  Branches       62       62              
==========================================
- Hits        13042    13035       -7     
- Misses       1829     1834       +5     
- Partials      149      151       +2     

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