update-art-module-prebuilts.py: update to python3 am: 15826e543c am: cae85d01dc am: 610b561ae7 am: f2817c4a11

Original change: https://android-review.googlesource.com/c/platform/packages/modules/ArtPrebuilt/+/1683878

Change-Id: Ibe6c95e47a1b6b4dbcac908e9a0bdcf8ef93f26e