Migrate to Node 20

[ernestognw]

🧐 Motivation

We have a few dependency PR updates that require a higher node version:

• Update dependency p-limit to v5 #4716
• Update actions/setup-node action to v4 - autoclosed #4702
• Update actions/setup-python action to v5 #4781
• Update dependency undici to v6 - autoclosed #4780
• Update actions/setup-java action to v4 #4770

The minimum node version between both is 18 but ideally we should upgrade to LTS (20)

📝 Details

We need to update the CI. If migrated correctly the CI should pass along with a PR solving this.

Note updating dependencies is considered highly sensitive so we need to be careful while upgrading.

[ernestognw]

The release-v4.9 branch was updated to Node 16 in a83918d to unblock the upgradeable contracts transpilation. This caused the following diff in the 4.9.5 release:

$ diff -qr contracts-4.9.3 contracts-4.9.5
Only in contracts-4.9.3/access: README.adoc
Files contracts-4.9.3/build/contracts/ERC1155.json and contracts-4.9.5/build/contracts/ERC1155.json differ
Files contracts-4.9.3/build/contracts/ERC1155PresetMinterPauser.json and contracts-4.9.5/build/contracts/ERC1155PresetMinterPauser.json differ
Files contracts-4.9.3/build/contracts/ERC20.json and contracts-4.9.5/build/contracts/ERC20.json differ
Files contracts-4.9.3/build/contracts/ERC20PresetFixedSupply.json and contracts-4.9.5/build/contracts/ERC20PresetFixedSupply.json differ
Files contracts-4.9.3/build/contracts/ERC20PresetMinterPauser.json and contracts-4.9.5/build/contracts/ERC20PresetMinterPauser.json differ
Files contracts-4.9.3/build/contracts/ERC721.json and contracts-4.9.5/build/contracts/ERC721.json differ
Files contracts-4.9.3/build/contracts/ERC721PresetMinterPauserAutoId.json and contracts-4.9.5/build/contracts/ERC721PresetMinterPauserAutoId.json differ
Files contracts-4.9.3/build/contracts/ERC777.json and contracts-4.9.5/build/contracts/ERC777.json differ
Files contracts-4.9.3/build/contracts/ERC777PresetFixedSupply.json and contracts-4.9.5/build/contracts/ERC777PresetFixedSupply.json differ
Files contracts-4.9.3/build/contracts/Escrow.json and contracts-4.9.5/build/contracts/Escrow.json differ
Files contracts-4.9.3/build/contracts/PaymentSplitter.json and contracts-4.9.5/build/contracts/PaymentSplitter.json differ
Files contracts-4.9.3/build/contracts/ProxyAdmin.json and contracts-4.9.5/build/contracts/ProxyAdmin.json differ
Files contracts-4.9.3/build/contracts/RefundEscrow.json and contracts-4.9.5/build/contracts/RefundEscrow.json differ
Files contracts-4.9.3/build/contracts/SafeERC20.json and contracts-4.9.5/build/contracts/SafeERC20.json differ
Files contracts-4.9.3/build/contracts/TimelockController.json and contracts-4.9.5/build/contracts/TimelockController.json differ
Files contracts-4.9.3/build/contracts/TokenTimelock.json and contracts-4.9.5/build/contracts/TokenTimelock.json differ
Files contracts-4.9.3/build/contracts/UpgradeableBeacon.json and contracts-4.9.5/build/contracts/UpgradeableBeacon.json differ
Files contracts-4.9.3/build/contracts/VestingWallet.json and contracts-4.9.5/build/contracts/VestingWallet.json differ
Only in contracts-4.9.3/crosschain: README.adoc
Only in contracts-4.9.3/finance: README.adoc
Only in contracts-4.9.3/governance: README.adoc
Only in contracts-4.9.3/interfaces: README.adoc
Files contracts-4.9.3/metatx/ERC2771Context.sol and contracts-4.9.5/metatx/ERC2771Context.sol differ
Only in contracts-4.9.3/metatx: README.adoc
Files contracts-4.9.3/package.json and contracts-4.9.5/package.json differ
Only in contracts-4.9.3/proxy: README.adoc
Only in contracts-4.9.3/security: README.adoc
Only in contracts-4.9.3/token/ERC1155: README.adoc
Only in contracts-4.9.3/token/ERC1155/presets: README.md
Only in contracts-4.9.3/token/ERC20: README.adoc
Files contracts-4.9.3/token/ERC20/extensions/ERC20Permit.sol and contracts-4.9.5/token/ERC20/extensions/ERC20Permit.sol differ
Files contracts-4.9.3/token/ERC20/extensions/IERC20Permit.sol and contracts-4.9.5/token/ERC20/extensions/IERC20Permit.sol differ
Only in contracts-4.9.3/token/ERC20/presets: README.md
Only in contracts-4.9.3/token/ERC721: README.adoc
Only in contracts-4.9.3/token/ERC721/presets: README.md
Only in contracts-4.9.3/token/ERC777: README.adoc
Only in contracts-4.9.3/token/common: README.adoc
Files contracts-4.9.3/utils/Context.sol and contracts-4.9.5/utils/Context.sol differ
Files contracts-4.9.3/utils/Multicall.sol and contracts-4.9.5/utils/Multicall.sol differ
Only in contracts-4.9.3/utils: README.adoc
Only in contracts-4.9.3/vendor/compound: LICENSE
Only in contracts-4.9.3/vendor/optimism: LICENSE

This is consistent with what we expected since the Multicall update in 3af6271 but it curiously removes the .adoc and .md files. We should test what will be the produced diff between compiling and releasing with Node 16 (as of today) and Node 20.

This likely comes from a dependency (perhaps npm) that installs a higher version when using 16.x instead of 14.x