Upgrade systemd's version from 247.3-7 to 247.3-7+deb11u2
to fix CVE-2022-3821/CVE-2022-4415.
Test Plan:
Pass: downloader
Pass: build-pkgs --clean --all
Pass: build-image
Pass: boot
Closes-bug: #2021448
Signed-off-by: Li Zhou <li.zhou@windriver.com>
Change-Id: I747041d7810fd9033fc16f48d9fa05e0756a6513