Upgrade unicode-bidi to 0.3.15 am: 1ab7a07061

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/unicode-bidi/+/2950807

Change-Id: I14d9a3b40c0486cf544654d3abd745dec7c3b633
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>