Update num_cpus to 1.13.1 am: 1c54293d6f am: d8658ce468 am: a3ef2ca366

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

Change-Id: I984529b9e79e2200239f413ebeffeec0be248862