[Automated] Update latex-math

[github-actions[bot]]

Automated changes by update-latex-math.yaml workflow. Compare and merge to keep latex-math up to date with latex-math. This branch will automatically be updated on subsequent commits.

[jemus42]

Current latex-math removes some commands compared to the version in this repo, e.g. \Lpiv.

A quick grep shows this is used in at least one slide set:

❯ rg -F "\Lpiv"
slides/cart/slides-cart-splitcriteria-classification.tex
28:\item (Multi-class) Brier score $\Lpiv =  \sumkg (\pik - o_k(y))^2$,\\ a.k.a. $L_2$ loss on probabilities
29:\item (Multi-class) Log loss $\Lpiv =  - \sumkg o_k(y) \log(\pik)$, \\

We'd have to check for removed macros in the slides etc. before we can merge.

[jemus42]

I've updated the latex-math repo to add the missing commands, assuming they were omitted in error. Now the only changes are formatting and additions, no removals, so this should be safe to merge.