Commit 12d28b2535 for bind

commit 12d28b253572127bf35160e5dc8061f095ca8980
Merge: a1ee8f6295 5faeafd69f
Author: Mark Andrews <marka@isc.org>
Date:   Thu Oct 8 07:52:00 2026 +1100

    fix: dev: DoH client Content-Type validation accepted invalid values

    The Content-Type validation accepted any value that started with
    `application/dns-message`.  This has been fixed.

    Closes #6137

    Merge branch '6137-fix-doh-client-content-type-validation' into 'main'

    See merge request isc-projects/bind9!12851