chore: release 0.7.8 #245

Job	Run time
clippy	16s
miri --no-default-features	4m 18s
docs	14s
feature-checks	14s
miri	4m 22s
miri --all-features	4m 26s
fmt	14s
test stable --no-default-features	12s
test stable	11s
test stable --all-features	36s
test beta --no-default-features	16s
test beta	19s
test beta --all-features	46s
test nightly --no-default-features	17s
test nightly	20s
test nightly --all-features	43s
test 1.81 --no-default-features	15s
test 1.81	13s
test 1.81 --all-features	26s
deny / cargo deny check	14s
	18m 52s

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