deps(opam): learn-ocaml 0.x does not build with asak 0.4

[erikmd]

• Kind: bugfix

• Close #?

Description

@AltGr you should probably add a similar commit (with {>= 0.4}) in your PR #481.

Checklist

• Read the CONTRIBUTING.md guide and:
  • Use Atomic Commits so each commit gathers a single logical change
  • Use Conventional Commits regarding commit messages (needed by our release toolchain)
• Add/update tests
• Add/update documentation
• …

Note to maintainers

• Read this wiki page.
• Make sure the PR has a milestone.
• Assign yourself before merging.
• Either do a regular merge:
  • for PRs containing several commits following conventional-commits,
  • or for PRs containing 1 commit shared with a later PR (to preserve the SHA1)
• Or do a squash-merge:
  • for PRs containing only 1 commit (not shared with a later PR),
  • or for PRs containing several commits that need not be kept in the history;
  • → Update the commit message header with a conventional-commit type,
  • → Add a footer Close #… if a related issue exists.

[AltGr]

It's already there obviously (043f813) ; but now it's in conflict of course 😩