feat: enable PRAGUE on bsc #224

Job	Run time
docs / optimism	1m 41s
clippy / optimism	1m 21s
docs / bsc	1m 41s
check	1m 7s
clippy / bsc	1m 28s
check serde	58s
check std	1m 5s
fmt	7s
test stable --no-default-features	2m 58s
test stable	2m 53s
TyposCheck	6s
test stable --features bsc	2m 52s
test stable --features optimism,opbnb	3m 17s
test beta --no-default-features	3m 9s
test beta	3m 5s
test beta --features bsc	2m 55s
test beta --features optimism,opbnb	3m 23s
test nightly --no-default-features	2m 38s
test nightly	2m 34s
test nightly --features bsc	2m 31s
test nightly --features optimism,opbnb	2m 47s
	44m 36s

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