update submodule and version file to edk2-stable202408

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

edk2: commit version info

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20240327102448.61877-3-kraxel@redhat.com>