[automerger skipped] Update Security String to 2023-09-01 am: 6f69b707 -s ours

am skip reason: Merged-In Ia5208702fc02d0e1ab53d1affc664363fba74a67 with SHA-1 f777dbc7 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/24061434



Change-Id: Iaef75b4c1b3b92a6824fda6a52df2ef09e4fb3f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>