[TMP] opam: hardcode pandoc depext

Workaround: to be reverted once
ocaml/opam-repository#24342 is merged

catala.opam

@@ -47,7 +47,6 @@ depends: [
   "obelisk" {cataladevmode}
   "conf-npm" {cataladevmode}
   "conf-python-3-dev" {cataladevmode}
-  "conf-pandoc" {cataladevmode}
   "cpdf" {cataladevmode}
   "z3" {catalaz3mode}
 ]
@@ -72,10 +71,10 @@ build: [
 ]
 dev-repo: "git+https://github.com/CatalaLang/catala.git"
 depexts: [
-  ["groff" "latexmk" "python3-pip"]
+  ["groff" "latexmk" "python3-pip" "pandoc"]
     {cataladevmode & os-family = "debian"}
-  ["groff" "texlive-xetex" "texmf-dist-latexextra" "texmf-dist-pictures" "py3-pip" "py3-pygments"]
+  ["groff" "texlive-xetex" "texmf-dist-latexextra" "texmf-dist-pictures" "py3-pip" "py3-pygments" "pandoc-cli"]
     {cataladevmode & os-distribution = "alpine"}
-  ["groff" "latex-mk" "python-pygments"]
+  ["groff" "latex-mk" "python-pygments" "pandoc"]
     {cataladevmode & os-family = "arch"}
 ]