Feat/polkadot sdk v1.16.0

[gztensor]

Description

Update to Polkadot SDK 1.16.

Details: Biggest changes and testing

• System-specific RPC methods on full client stopped using DenyUnsafe (before vs. after), but the safety check is still in place and there is a test for that. Tested manually to confirm:

$ curl -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "method":"system_health", "params":[], "id":1}' http://localhost:9945

Provided Host header is not whitelisted.
$ curl -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "method":"system_health", "params":[], "id":1}' http://localhost:9945

{"jsonrpc":"2.0","id":1,"result":{"peers":1,"isSyncing":false,"shouldHavePeers":false}}

• CurrencyAdapter is deprecated and replaced with FungibleAdapter for TransactionFeeHandler. Adding e2e test for transaction fees: Add transaction fee tests bittensor#2318

Related Issue(s)

n/a

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Other (please describe): dependency update

Breaking Change

n/a

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have run cargo fmt and cargo clippy to ensure my code is formatted and linted correctly
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Screenshots (if applicable)

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Additional Notes

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[orriin]

Intentional?

[gztensor]

I'd remove the change. This was +1 to Finney version, but we will be updating it to the correct one anyway later.