feat: bump nybbles, use local encode_path #234

Job	Run time
docs	27s
clippy	31s
feature-checks	33s
fmt	12s
miri --no-default-features	4m 42s
miri	48s
test stable --no-default-features	21s
miri --all-features	53s
test stable	34s
test stable --all-features	39s
test beta --no-default-features	23s
test beta	20s
test beta --all-features	51s
test nightly --no-default-features	34s
test nightly	34s
test nightly --all-features	46s
test 1.81 --no-default-features	19s
test 1.81	20s
test 1.81 --all-features	33s
deny / cargo deny check	19s
	14m 39s

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