ci: use `-Cinstrument-coverage` instead of `-Zprofile` #1300

Job	Run time
cargo fmt --all -- --check	5s
Code coverage (ubuntu-latest, nightly, --all-features)	1m 48s
cargo clippy -- -D warnings	45s
cargo check (ubuntu-latest)	11s
cargo check (macOS-latest)	19s
cargo test (ubuntu-latest)	44s
cargo check (windows-latest)	1m 36s
cargo test (macOS-latest)	31s
cargo test (windows-latest)	1m 30s
	7m 29s

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