Update num_cpus to 1.13.1 am: 1c54293d6f am: d8658ce468

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num_cpus/+/2005973

Change-Id: I76e70cb5ae0a773c04bfcb3011260d8a6a0e8f73