Update VNDK snapshot v31 to build 7936809. am: 4f7ac2f4d7 am: cf372d84d6 am: 8a75df6620

Original change: https://android-review.googlesource.com/c/platform/prebuilts/vndk/v31/+/1899053

Change-Id: I5a23d34e88228d7d800ce162afceb383aac62c91
tree: 5de9585762dd2de4977f45537d046fd173da3882
  1. arm/
  2. arm64/
  3. common/
  4. x86/
  5. x86_64/
  6. Android.bp
  7. OWNERS