[automerge] Use libbitflags-1.3.2 2p: 6c48cd67ca

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/bindgen/+/23171592


Change-Id: I07adde93d4c1a3bbe8ef59f3aa1925c294723401
Merged-In: I6ca7174cb3e7443ed0ab34cc2f0e94fb415194f0