Update num_cpus to 1.13.1

Test: cd external/rust/crates && atest --host -c
Change-Id: I86ebf27d346cf830574fc62e7a35976eb66bd428
diff --git a/Cargo.toml b/Cargo.toml
index 0bab66d..f708cc8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,25 +3,24 @@
 # When uploading crates to the registry Cargo will automatically
 # "normalize" Cargo.toml files for maximal compatibility
 # with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies
+# to registry (e.g., crates.io) dependencies.
 #
-# If you believe there's an error in this file please file an
-# issue against the rust-lang/cargo repository. If you're
-# editing this file be aware that the upstream Cargo.toml
-# will likely look very different (and much more reasonable)
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
 
 [package]
 name = "num_cpus"
-version = "1.13.0"
+version = "1.13.1"
 authors = ["Sean McArthur <sean@seanmonstar.com>"]
 description = "Get the number of CPUs on a machine."
 documentation = "https://docs.rs/num_cpus"
 readme = "README.md"
 keywords = ["cpu", "cpus", "cores"]
 categories = ["hardware-support"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 repository = "https://github.com/seanmonstar/num_cpus"
-[dependencies.libc]
-version = "0.2.26"
 [target."cfg(all(any(target_arch = \"x86_64\", target_arch = \"aarch64\"), target_os = \"hermit\"))".dependencies.hermit-abi]
 version = "0.1.3"
+[target."cfg(not(windows))".dependencies.libc]
+version = "0.2.26"