git: openjdk/jdk21u-dev: master: 8339080: Bump update version for OpenJDK: jdk-21.0.6

[Goetz Lindenmaier]

Changeset: 669c2b4f
Branch: master
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2024-08-28 05:09:54 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/669c2b4f07a89c5f73f5915a8c97eb201965797d

8339080: Bump update version for OpenJDK: jdk-21.0.6

Reviewed-by: sgehwolf

! .jcheck/conf
! make/conf/version-numbers.conf