Upgrade to 0.9.42

[valentinfernandez1]

Upgrade Trappist's runtime from v0.9.40 to v0.9.42.

• Upgrade DEX pallet to v0.9.42
• Consult Polkadot v0.9.41 + 42 release report for important changes that may impact Trappist's runtime.
• Upgrade Chess pallet to polkadot-v0.9.42 (Considering its going to be added to Trappist with the next runtime upgrade)
• Upgrade Trappist runtime & node to v0.9.42. See Parachain template update to v0.9.42 PR for guidance.
• Review Runtime config for any misconfigurations.
• Review XCM config for any misconfigurations.
• Update WeightToFee struct to use FeePolynomial instead of the current custom implementation introduced in Refactor WeightToFee to include ProofSize #215

[valentinfernandez1]

I will be linking any useful links for the upgrade:
Misc
Deprecate Currency; introduce holds and freezing into fungible traits
Metadata V15: Expose API to fetch metadata for version

Contracts
[Contracts] Overflowing bounded DeletionQueue
Companion PR for contract deletion updates

[valentinfernandez1]

WIP on branch https://github.com/paritytech/trappist/tree/vf-0.9.42

[vstam1]

Looking over the XCM config I have a few points:

• Line 62: Can't we remove Ancestry? Its never used.

• Line 136: Could use the ConvertedConcreteId instead of ConvertedRegisteredAssetId. I can understand that the name makes more sense then ConvertedConcreteId in this case but could also create seperate type ConvertedRegisteredAssetId = ConvertedContreteId<...> to prevent code duplication. I think Gavin did change the trait bounds in 0.9.43 or still just master from Convert -> MaybeEquivalence but think that the 0.9.42 still has the old trait bounds.
  Still just a suggestion, can keep it as is.

• Line 201: Might be able to use RockmineLocation.

• Line 329: IMPORTANT: I would disable random users from sending arbitrary xcm messages to any destination.

• General: Might be good to change from Rockmine to RococoAssetHub