update ctheorem for typst 0.13 compatibility

Author: gordonwoodhull

src/resources/filters/customnodes/theorem.lua

@@ -93,7 +93,7 @@ local letted_typst_theorem = {}
 local function ensure_typst_theorems(reftype)
   if not included_typst_theorems then
     included_typst_theorems = true
-    quarto.doc.include_text("in-header", "#import \"@preview/ctheorems:1.1.0\": *")
+    quarto.doc.include_text("in-header", "#import \"@preview/ctheorems:1.1.3\": *")
     quarto.doc.include_text("in-header", "#show: thmrules")
   end
   if not letted_typst_theorem[reftype] then