ci: use `-Cinstrument-coverage` instead of `-Zprofile` #280

Job	Run time
cargo clippy -- -D warnings (ubuntu-latest)	9s
Code Coverage (ubuntu-latest, unix)	1m 11s
cargo fmt --all -- --check	6s
cargo clippy -- -D warnings (macOS-latest)	12s
cargo check (ubuntu-latest)	9s
Code Coverage (macos-latest, macos)	1m 13s
cargo clippy -- -D warnings (windows-latest)	35s
cargo check (macOS-latest)	13s
Code Coverage (windows-latest, windows)	50s
cargo check (windows-latest)	1m 43s
cargo test (ubuntu-latest)	18s
cargo test (macOS-latest)	23s
cargo test (windows-latest)	46s
	7m 48s

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