🔧 test fixes for sphinx 7.4

[chrisjsewell]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.14%. Comparing base (d448abf) to head (c73ec14).
Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
myst_parser/sphinx_ext/mathjax.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #945   +/-   ##
=======================================
  Coverage   90.13%   90.14%           
=======================================
  Files          24       24           
  Lines        3416     3418    +2     
=======================================
+ Hits         3079     3081    +2     
  Misses        337      337           

Flag	Coverage Δ
pytests	90.14% <80.00%> (+<0.01%)	⬆️

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