Roll back to TeX Live 2023

.gitlab-ci.yml

-image: texlive/texlive:pretest
+image: texlive/texlive
 
 stages:
   - build

example/mu/example.dtx

@@ -631,17 +631,18 @@ Wünsch mir Glück!
 %<*pdftex>
 \shorthandoff{-}
 %</pdftex>
-\begin{markdown}[%
+\begin{markdown*}{
+  citationNbsps,
+  citations,
   definitionLists,
-  notes,
-  inlineNotes,
+  fencedCode,
   hashEnumerators,
-  citations,
-  citationNbsps,
+  inlineNotes,
+  notes,
   pipeTables,
   rawAttribute,
   tableCaptions,
-]
+}
 
 If you decide that `\LaTeX`{=tex} is too wordy for some parts of your
 document, there are [packages](https://www.ctan.org/pkg/markdown
@@ -829,7 +830,7 @@ print(joe.pop, " ") while joe.size > 0
 print "\n"
 ~~~~~~
 
-\end{markdown}
+\end{markdown*}
 %<*pdftex>
 \shorthandon{-}
 %</pdftex>