test: try direct coverage upload #968

Job	Run time
Check	21s
Clippy (all code)	31s
Clippy (main package)	26s
Documentation	19s
Code coverage	3m 38s
Rustfmt	12s
Check with minimal Rust version	46s
Mutation tests (0)	2m 22s
Mutation tests (1)	2m 23s
Test all features	46s
Mutation tests (2)	2m 23s
Test feature alpha-async-tokio-rusqlite	43s
Test examples	42s
Mutation tests (3)	2m 15s
Test feature from-directory	44s
Test no features	44s
	19m 15s

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