Merge "point to new repo hooks for mainline uploads" into rvc-dev am: 1af41a383e am: 03640d1598 am: fb526136f8

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libvpx/+/11605676

Change-Id: I1d353aca38b97ffd8c98f504fd7f722881f18780