git: openjdk/jdk8u-dev: 8363965: GHA: Switch cross-compiling sysroots to Debian bookworm

[Severin Gehwolf]

Changeset: 7b9b1e17
Branch: master
Author:    Severin Gehwolf <sgehwolf at openjdk.org>
Date:      2025-08-08 08:07:57 +0000
URL:       https://git.openjdk.org/jdk8u-dev/commit/7b9b1e17adb757515ce3f7b6e9587e78fdfd7fe2

8363965: GHA: Switch cross-compiling sysroots to Debian bookworm

Reviewed-by: shade, andrew
Backport-of: 3ff903a37cc0bbe4cb5e2a6b08faa48fde71445f

! .github/workflows/submit.yml