Bump cc from 1.1.20 to 1.1.21 #3515

Job	Run time
Check on ubuntu-22.04 against stable Rust	3m 9s
Check on macos-13 against stable Rust	15m 25s
Build arm-mac binary (aarch64-apple-darwin)	8m 36s
Check on ubuntu-22.04 against nightly Rust	5m 31s
Debug build arm-mac-dbg binary (aarch64-apple-darwin)	10m 42s
Check on macos-13 against nightly Rust	11m 37s
Build intel-mac binary (x86_64-apple-darwin)	8m 12s
Debug build intel-mac-dbg binary (x86_64-apple-darwin)	7m 18s
Build arm-linux binary (armv7-unknown-linux-gnueabihf)	4m 54s
Debug build arm-linux-dbg binary (armv7-unknown-linux-gnueabihf)	4m 50s
Build arm-linux-static binary (armv7-unknown-linux-musleabihf)	5m 18s
Debug build arm-linux-static-dbg binary (armv7-unknown-linux-musleabihf)	5m 10s
Build arm64-linux binary (aarch64-unknown-linux-gnu)	6m 1s
Debug build arm64-linux-dbg binary (aarch64-unknown-linux-gnu)	5m 14s
Build arm64-linux-static binary (aarch64-unknown-linux-musl)	5m 57s
Debug build arm64-linux-static-dbg binary (aarch64-unknown-linux-musl)	5m 7s
Build x86_64-linux binary (x86_64-unknown-linux-gnu)	4m 50s
Debug build x86_64-linux-dbg binary (x86_64-unknown-linux-gnu)	4m 48s
Build x86_64-linux-static binary (x86_64-unknown-linux-musl)	5m 8s
Debug build x86_64-linux-static-dbg binary (x86_64-unknown-linux-musl)	4m 58s
Build Docker images	0s
Release	0s
	2h 12m 45s

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