fix(serde): add alias `v` for `yParity` #2149

Job	Run time
miri --no-default-features	2m 54s
miri	2m 54s
test ubuntu-latest stable --no-default-features	59s
miri --all-features	2m 55s
test ubuntu-latest stable	1m 0s
test ubuntu-latest nightly --no-default-features	55s
clippy	55s
check no_std	46s
test ubuntu-latest nightly	58s
test ubuntu-latest 1.79 --no-default-features	40s
docs	43s
test ubuntu-latest 1.79	42s
features stable	2m 15s
test windows-latest stable --no-default-features	2m 39s
features stable --all-targets	2m 54s
fmt	16s
test windows-latest stable	2m 38s
features nightly	2m 9s
test windows-latest nightly --no-default-features	2m 7s
features nightly --all-targets	2m 54s
test windows-latest nightly	2m 21s
wasm	37s
test windows-latest 1.79 --no-default-features	1m 46s
test windows-latest 1.79	1m 42s
test ubuntu-latest 1.79 --features json	37s
test windows-latest 1.79 --features json	1m 51s
test ubuntu-latest nightly --all-features	1m 5s
test windows-latest nightly --all-features	2m 24s
ci success	2s
	46m 38s

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