Update sequoia-openpgp to version 2.3.0. This includes three security relevant fixes (assigned CVE-2026-42783, CVE-2026-42784, and CVE-not-assigned-yet), see "Notable fixes" in the release notes: <https://gitlab.com/sequoia-pgp/sequoia/-/raw/openpgp/v2.3.0/openpgp/NEWS> This update includes rebuilds of all affected applications to pick up the fixes for these issues.