Polkadot: Update rust cross contract call example to ink! v5.0 (#1635) #11

Job	Run time
Docs	1s
Linux x86-64	1s
Container Image	1s
Linux Arm	0s
Mac Arm	1s
Mac Intel	40m 20s
Repolinter	1s
Stdlib	1s
Windows	30m 11s
Mac Universal Binary	0s
Polkadot Integration test	0s
Anchor Integration test	0s
Polkadot Integration test with subxt	0s
Solana Integration test	0s
Visual Code Extension	0s
Coverage report	0s
	1h 10m 37s

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