linux-yocto/6.12: update CVE exclusions (6.12.67)

linux-yocto/6.12: update CVE exclusions (6.12.67)

Data pulled from: https://github.com/CVEProject/cvelistV5

    1/1 [
        Author: cvelistV5 Github Action
        Email: github_action@example.com
        Subject: 4 changes (0 new | 4 updated): - 0 new CVEs: - 4 updated CVEs: CVE-2025-71178, CVE-2026-0925, CVE-2026-24435, CVE-2026-24439
        Date: Mon, 26 Jan 2026 19:55:24 +0000

    ]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>