Bug 1817900 - Update num_cpus to 1.15.0. r=emilio,supply-chain-reviewers

Cargo.lock

Cargo.toml

build/rust/hermit-abi/Cargo.toml

build/rust/hermit-abi/lib.rs

supply-chain/audits.toml

third_party/rust/hermit-abi/.cargo-checksum.json

third_party/rust/hermit-abi/Cargo.toml

third_party/rust/hermit-abi/rust-toolchain

third_party/rust/hermit-abi/src/errno.rs

third_party/rust/hermit-abi/src/lib.rs

third_party/rust/num_cpus/.cargo-checksum.json

third_party/rust/num_cpus/CHANGELOG.md

third_party/rust/num_cpus/Cargo.lock

third_party/rust/num_cpus/Cargo.toml