#20 Runtime Upgrade - Upgrade Substrate/Polkadot/Cumulus version and enable EVM+ for Acala

Summary

This is a runtime release for Acala and Karura that upgrades Substrate/Cumulus/Polkadot to v0.9.26 and reduced the publication fee for Acala EVM+.

Release Note: Release Acala & Karura 2.9.1 · AcalaNetwork/Acala · GitHub

Referendum