ci: fix deprecated codecov argument #306

Job	Run time
cargo check (ubuntu-latest)	8s
cargo clippy -- -D warnings (ubuntu-latest)	10s
Code Coverage (ubuntu-latest, unix)	1m 44s
cargo check (macOS-latest)	15s
cargo clippy -- -D warnings (macOS-latest)	15s
cargo check (windows-latest)	1m 35s
Code Coverage (macos-latest, macos)	1m 57s
cargo clippy -- -D warnings (windows-latest)	1m 55s
cargo fmt --all -- --check	7s
Code Coverage (windows-latest, windows)	3m 43s
cargo test (ubuntu-latest)	22s
cargo test (macOS-latest)	15s
cargo test (windows-latest)	1m 50s
	14m 16s

Provide feedback