Bump `starknet` to `0.12.0` #8505

Job	Run time
build	16m 19s
cairofmt	5s
clippy	11m 9s
docs	13m 52s
dojo-world-bindings-check	9m 20s
ensure-wasm	7m 42s
fmt	2m 15s
ensure-docker	8s
test-hurl	2m 24s
dojo-core-test	3m 3s
dojo-spawn-and-move-example-test	2m 0s
ensure-windows	33m 23s
test	19m 18s
	2h 0m 58s

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