chore: update examples to use jsonrpc and cairo 1 accounts #299

Job	Run time
Build starknet-ff features	1m 16s
Build starknet-curve features	57s
Build starknet-crypto-codegen features	1m 10s
Build starknet-crypto features	1m 4s
Build starknet-core features	1m 34s
Build starknet-providers features	1m 47s
Build starknet-signers features	1m 19s
Build starknet-accounts features	1m 39s
Build starknet-contract features	1m 29s
Build starknet-macros features	1m 7s
Build starknet features	2m 23s
	15m 45s

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