Use latest codecov action #3326

Job	Run time
Check Linux Packaging	1m 46s
Actionlint	32s
Test x86_64-unknown-linux-gnu	1m 51s
Rustfmt	39s
Test x86_64-apple-darwin	2m 54s
Output Regression Test	2m 13s
Test Linux (latest stable Rust)	1m 48s
Test x86_64-pc-windows-msvc	2m 45s
Test with MIME database	1m 34s
Test aarch64-unknown-linux-gnu	3m 9s
Test aarch64-apple-darwin	1m 37s
Test x86_64-unknown-linux-musl	2m 8s
	22m 56s

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