devel/ocaml-opam: Security update 2.5.1 => 2.5.2
Changelog:
https://github.com/ocaml/opam/blob/2.5.2/CHANGES
PR: 296642
Approved by: osa, vvd (Mentors, implicit)
MFH: 2026Q3
Security: CVE-2026-57825
(cherry picked from commit d5ea67850ea1a47bffee8e76a5215b73345f897c)