Migrate to cargo_embargo. am: c952b7aca2 am: be123d3431 am: eed8f2116b

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/thread_local/+/2828131

Change-Id: I7c08ad5e019a7fddb3e3c177dedb15b8c521e8fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>