Merge "Run R8 on bouncycastle with shrinking for the boot classpath." into main am: 07160b5abe

Original change: https://android-review.googlesource.com/c/platform/external/bouncycastle/+/2901219

Change-Id: I68e608d0e1cf4785f88aad8ba7437b21d32dd022
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>