Use dev texmath.

cabal.project

@@ -14,4 +14,9 @@ source-repository-package
   location: https://github.com/jgm/citeproc.git
   tag: 723d22a112a15a8f287d4db68ba05e9083facfec
 
+source-repository-package
+  type: git
+  location: https://github.com/jgm/texmath.git
+  tag: 77e20978ffcdec4ca50bbb809f061850c0998560
+
 -- TODO: release new skylighting-core, skylighting

stack.yaml

@@ -22,8 +22,8 @@ extra-deps:
 - typst-symbols-0.1.8.1
 - texmath-0.12.10.3
 - typst-0.8.0.1
-- git: https://github.com/jgm/citeproc.git
-  commit: 723d22a112a15a8f287d4db68ba05e9083facfec
+- git: https://github.com/jgm/texmath.git
+  commit: 77e20978ffcdec4ca50bbb809f061850c0998560
 ghc-options:
    "$locals": -fhide-source-paths -Wno-missing-home-modules
 resolver: lts-23.22