feat: Rename PRAGUE_EOF to OSAKA (#1822) #4416

Job	Run time
docs	1m 15s
check no_std	22s
clippy	1m 29s
check	19s
check no_std optimism,kzg-rs	29s
check serde	23s
fmt	8s
check std	20s
test stable --no-default-features	1m 10s
TyposCheck	6s
test stable	1m 2s
test stable --all-features	1m 49s
test beta --no-default-features	55s
test beta	56s
test beta --all-features	1m 39s
test nightly --no-default-features	44s
test nightly	48s
test nightly --all-features	1m 23s
	15m 17s

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