linux-yocto/6.12: update CVE exclusions (6.12.57)

linux-yocto/6.12: update CVE exclusions (6.12.57)

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

    1/1 [
        Author: cvelistV5 Github Action
        Email: github_action@example.com
        Subject: 4 changes (1 new | 3 updated): - 1 new CVEs: CVE-2025-8558 - 3 updated CVEs: CVE-2014-5406, CVE-2023-7312, CVE-2025-50363
        Date: Mon, 3 Nov 2025 18:44:24 +0000

    ]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>