chore: bump versions to v0.18 #189

Job	Run time
basic-operations/anchor/create-nullifier	18m 28s
basic-operations/anchor/update	21m 41s
basic-operations/anchor/reinit	20m 4s
basic-operations/anchor/burn	21m 53s
basic-operations/anchor/close	18m 32s
basic-operations/anchor/create	18m 4s
counter/anchor	18m 47s
zk/nullifier	16m 10s
zk/zk-id	17m 11s
create-and-update	18m 56s
	3h 9m 46s

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