Ignore buggy clippy::lint_groups_priority lint #2778

Job	Run time
test (1.56)	1m 14s
test (stable)	45s
test (beta)	50s
test (nightly)	2m 4s
miri / miri	54s
deny / deny	12s
docs / docs	19s
check-external-types / check-external-types	16s
msrv / msrv	5m 6s
tidy / tidy	1m 1s
	12m 41s

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