GHA: build docs on ubuntu 24.04 (#2818)

* GHA: build docs on ubuntu 24.04

* I don't think we still need the pdf documentation

Author: dweindl

.github/workflows/test_doc.yml

@@ -16,7 +16,7 @@ on:
 jobs:
   doxygen:
     name: Test Doxygen
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     strategy:
       matrix:

scripts/run-doxygen.sh

@@ -48,9 +48,9 @@ rm "${DOXYFILE}"
 rm "${MTOC_CONFIG_PATH}/mtocpp_filter.sh"
 
 # Build pdf
-cd "${OUTDIR}/latex"
-make
-cp ./refman.pdf "${AMICI_PATH}/AMICI_guide.pdf"
+#cd "${OUTDIR}/latex"
+#make
+#cp ./refman.pdf "${AMICI_PATH}/AMICI_guide.pdf"
 
 # suppress doxygen warnings about status badges
 grep -v "warning: Unexpected html tag <img> found within <a href=...> context" "${DOXY_WARNING_FILE}" > "${DOXY_WARNING_FILE}_tmp" || [[ $? == 1 ]]