[chore] Upgrade ftml version

[emmiegit]

This takes us from 1.33 -> 1.36, capturing several fixes and improvements made between these two versions.

I also remove the features since both html and mathml are enabled by default.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 2.03%. Comparing base (d73607b) to head (8e5d18a).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #2546   +/-   ##
=======================================
  Coverage     2.03%   2.03%           
=======================================
  Files          154     154           
  Lines         7366    7366           
=======================================
  Hits           150     150           
  Misses        7216    7216           

Flag	Coverage Δ		*Carryforward flag
deepwell	2.03% <ø> (ø)		Carriedforward from d73607b

*This pull request uses carry forward flags. Click here to find out more.

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