Bump ink! version

[Artemka374]

• Bump ink! version to 5.0.0-alpha
• Deprecate proxy pattern in favour of using ink! native set_code_hash
• Remove psp22_pallet from this repo

[github-actions]

Contract Name	main	update/ink-5.0	Difference
accessors_attr	1464	1468	4
contract_v1	10058	10188	130
contract_v2	11800	11918	118
diamond_caller	6041	6278	237
flash_borrower	4284	4524	240
flip_on_me	1476	1499	23
lending_contract	40786	40799	13
loan_contract	18318	18446	128
mock_receiver	1052	1052	0
my_access_control	14547	14625	78
my_access_control_enumerable	6504	6502	-2
my_diamond	12306	0	-12306
my_flipper_guard	2514	2537	23
my_governor	38642	38924	282
my_ownable	13294	13387	93
my_pausable	2024	2024	0
my_payment_splitter	10233	10302	69
my_proxy	4042	0	-4042
my_psp22	9655	9790	135
my_psp22_burnable	9904	9964	60
my_psp22_capped	9090	9153	63
my_psp22_facet_v1	8870	8934	64
my_psp22_facet_v2	8510	8602	92
my_psp22_flashmint	14149	14263	114
my_psp22_metadata	10468	10511	43
my_psp22_metadata_facet	5005	5062	57
my_psp22_metadata_upgradeable	12949	0	-12949
my_psp22_mintable	8400	8478	78
my_psp22_pallet	9932	0	-9932
my_psp22_pallet_burnable	11638	0	-11638
my_psp22_pallet_metadata	12173	0	-12173
my_psp22_pallet_mintable	10274	0	-10274
my_psp22_permit	12173	12239	66
my_psp22_token_timelock	7301	7572	271
my_psp22_upgradeable	9778	0	-9778
my_psp22_votes	18955	19007	52
my_psp22_wrapper	13959	14165	206
my_psp34	10994	11052	58
my_psp34_burnable	10908	10995	87
my_psp34_enumerable	12934	13036	102
my_psp34_metadata	12204	12290	86
my_psp34_mintable	10470	10522	52
my_psp37	10268	10376	108
my_psp37_batch	12388	12440	52
my_psp37_burnable	11907	11993	86
my_psp37_enumerable	16138	16207	69
my_psp37_metadata	11036	11114	78
my_psp37_mintable	11015	11122	107
my_psp61	7541	7614	73
my_timelock_controller	20478	20555	77
nonces	2682	2682	0
shares_contract	12720	12793	73
stable_coin_contract	10640	10699	59