Upgrade cargo_metadata to 0.19 #1710

Job	Run time
quick-test	2m 53s
tests-from-tarball (ubuntu-latest)	2m 28s
test (macOS-latest, stable)	5m 47s
pr-mutants (cargo)	3m 31s
test (macOS-latest, nightly)	9m 35s
cargo-mutants (0, cargo)	13m 6s
pr-mutants (nextest)	3m 1s
test (macOS-latest, 1.78)	5m 17s
cargo-mutants (1, cargo)	7m 45s
test (ubuntu-latest, stable)	5m 23s
cargo-mutants (2, cargo)	15m 54s
test (ubuntu-latest, nightly)	8m 48s
test (ubuntu-latest, 1.78)	5m 19s
cargo-mutants (3, cargo)	12m 17s
test (windows-latest, stable)	8m 1s
cargo-mutants (4, cargo)	7m 49s
test (windows-latest, nightly)	16m 4s
cargo-mutants (5, cargo)	9m 25s
test (windows-latest, 1.78)	8m 7s
cargo-mutants (6, cargo)	11m 7s
cargo-mutants (7, cargo)	7m 19s
cargo-mutants (8, cargo)	8m 7s
cargo-mutants (9, cargo)	12m 12s
overall-result	1s
	3h 9m 16s

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