Release reclient 0.64.0.d7886b3 to live am: 40a7917c75 am: 982179e14a am: 7eb19a9c57 am: a8fd40af8c

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/remoteexecution-client/+/18798976

Change-Id: I649d10396a39379664096b5996a40e57ee1fb7e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>