chore(deps): update codecov/codecov-action action to v4 #204

Job	Run time
cargo clippy -- -D warnings (ubuntu-latest)	23s
cargo clippy -- -D warnings (macOS-latest)	1m 10s
cargo clippy -- -D warnings (windows-latest)	1m 55s
cargo fmt --all -- --check	12s
cargo test (ubuntu-latest)	37s
cargo test (macOS-latest)	1m 51s
cargo check (ubuntu-latest)	1m 4s
Code Coverage (ubuntu-latest, unix)	2m 0s
Code Coverage (macos-latest, macos)	3m 17s
cargo check (macOS-latest)	1m 1s
cargo test (windows-latest)	1m 38s
Code Coverage (windows-latest, windows)	5m 10s
cargo check (windows-latest)	2m 17s
	22m 35s

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