Update bundletool am: 7d9bc43c36

Original change: https://android-review.googlesource.com/c/platform/prebuilts/bundletool/+/2205875

Change-Id: I5c0963833839292377d9021aadc883bda58a32e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>