Upgrade to v0.9.34

[stiiifff]

• Upgrade DEX pallet to v0.9.34
• Consult Polkadot v0.9.34 release report for important changes.
• Upgrade https://github.com/paritytech/pallet-contracts-xcm to polkadot-v0.9.34
• Upgrade Trappist runtime & node to v0.9.34

[stiiifff]

Depends on #98

[ayushmishra2005]

We decided to update current trappist code(0.9.33) to 0.9.36 directly Because Cumulus repo does not have any branch related to 0.9.34 and 0.9.35.