Use texmath 0.11.3

pandoc.cabal

@@ -385,7 +385,7 @@ library
                  safe >= 0.3 && < 0.4,
                  zip-archive >= 0.2.3.4 && < 0.5,
                  HTTP >= 4000.0.5 && < 4000.4,
-                 texmath >= 0.11.2.3 && < 0.12,
+                 texmath >= 0.11.3 && < 0.12,
                  xml >= 1.3.12 && < 1.4,
                  split >= 0.2 && < 0.3,
                  random >= 1 && < 1.2,

stack.yaml

@@ -13,7 +13,7 @@ packages:
 extra-deps:
 - pandoc-citeproc-0.16.3
 - pandoc-types-1.17.6.1
-- texmath-0.11.2.3
+- texmath-0.11.3
 - skylighting-0.8.2.3
 - skylighting-core-0.8.2.3
 - regex-pcre-builtin-0.95.0.8.8.35