git: openjdk/jdk21u: Added tag jdk-21.0.9+4 for changeset 3949aae8

[duke]

Tagged by: Goetz Lindenmaier <Goetz.Lindenmaier at sap.com>
Date:      2025-08-20 07:47:28 +0000

Added tag jdk-21.0.9+4 for changeset 3949aae8cd88
Changeset: 3949aae8
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2025-08-19 07:48:47 +0000
URL:       https://git.openjdk.org/jdk21u/commit/3949aae8cd88985d7eff29c3aa790097ef9a5fd0