Require libclang 9.0 or newer #2379

Job	Run time
quickchecking	14s
msrv	1m 2s
minimal	11s
rustfmt-clippy	29s
check-cfg	22s
docs	25s
test (ubuntu-latest, 9.0, 1, 0, 0, 0, 0)	1m 42s
test (ubuntu-latest, 9.0, 1, 0, 0, 1, 0)	1m 57s
test-expectations (ubuntu-latest)	43s
test-book	5s
test (ubuntu-latest, 9.0, 1, 0, 1, 0, 0)	1m 52s
test-expectations (macos-12)	1m 19s
test (ubuntu-latest, 9.0, 1, 0, 1, 1, 0)	1m 52s
test (ubuntu-latest, 9.0, 1, 1, 0, 0, 0)	2m 20s
test (ubuntu-latest, 9.0, 1, 1, 0, 1, 0)	2m 14s
test (ubuntu-latest, 9.0, 1, 1, 1, 0, 0)	2m 13s
test (ubuntu-latest, 9.0, 1, 1, 1, 1, 0)	2m 16s
test (ubuntu-latest, 16.0, 1, 0, 0, 0, 0)	4m 20s
test (ubuntu-latest, 16.0, 1, 0, 0, 1, 0)	4m 25s
test (ubuntu-latest, 16.0, 1, 0, 1, 0, 0)	4m 8s
test (ubuntu-latest, 16.0, 1, 0, 1, 1, 0)	4m 26s
test (ubuntu-latest, 16.0, 1, 1, 0, 0, 0)	4m 57s
test (ubuntu-latest, 16.0, 1, 1, 0, 1, 0)	5m 2s
test (ubuntu-latest, 16.0, 1, 1, 1, 0, 0)	4m 59s
test (ubuntu-latest, 16.0, 1, 1, 1, 1, 0)	4m 54s
test (ubuntu-latest, 16.0, 0, 0, 1)	1m 48s
test (macos-12, 9.0, 0, 0, 0)	2m 45s
success	1s
	1h 3m 1s

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