fsml is not compatible with ocaml 5
```
=== ERROR while compiling fsml.0.3.0 =========================================#
context 2.2.0~alpha~dev | linux/x86_64 | ocaml-base-compiler.5.0.0 | file:///home/opam/opam-repository
path ~/.opam/5.0/.opam-switch/build/fsml.0.3.0
command ~/.opam/opam-init/hooks/sandbox.sh build dune build -p fsml -j 71 @install
exit-code 1
env-file ~/.opam/log/fsml-7-14578e.env
output-file ~/.opam/log/fsml-7-14578e.out
(cd _build/default && /home/opam/.opam/5.0/bin/ocamlc.opt -w -40 -g -bin-annot -I src/lib/.fsml.objs/byte -I /home/opam/.opam/5.0/lib/ocaml/unix -I /home/opam/.opam/5.0/lib/ppx_deriving/runtime -I /home/opam/.opam/5.0/lib/ppx_deriving_yojson/runtime -I /home/opam/.opam/5.0/lib/result -I /home/opam/.opam/5.0/lib/seq -I /home/opam/.opam/5.0/lib/yojson -no-alias-deps -open Fsml -o src/lib/.fsml.objs/byte/fsml__Misc.cmo -c -impl src/lib/misc.pp.ml)
File "src/lib/misc.ml", line 38, characters 8-19:
38 | match Stream.peek s with
^^^^^^^^^^^
Error: Unbound module Stream
```
Signed-off-by: Marcello Seri <marcello.seri@gmail.com>