Bump :lang ocaml
Bump :lang ocaml

ocaml-ppx/ocamlformat@cd0eaa8 -> ocaml-ppx/ocamlformat@1dec6c3
ocaml/dune@daea74e -> ocaml/dune@f967df6
ocaml/merlin@3751cbf -> ocaml/merlin@06833e9

Closes #4068. Includes fix for ocaml-ppx/ocamlformat#1481

hlissner/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/doom-emacs