Acala & Karura 2.9.0

This is a client release for Acala and Karura that upgrades Substrate/Cumulus/Polkadot to v0.9.26 version.

Upgrade priority: MEDIUM

If you are running 2.7.0 or 2.8.0, please upgrade to this version ASAP to fix memory leak issue in those two versions.
If you are running 2.6.3, you may upgrade to this version at convenience.

Acala Release Details:

• Scope: Full Release
• Network: Acala
• Client Version: v2.9.0
• Runtime Version: 2090
• Release Branch: release-acala-2.9.0
  • Diff: release-acala-2.8.3...release-acala-2.9.0
• Substrate version: e8a7d161
  • Diff: paritytech/substrate@6cbe177...e8a7d16
• ORML version: 8c625a5a
  • Diff: open-web3-stack/open-runtime-module-library@b57f88b...8c625a5
• Cumulus version: e43b8b87
  • Diff: paritytech/cumulus@e5889f1...e43b8b8
• Polkadot version: v0.9.26
  • Diff: paritytech/polkadot@a7e188c...d878597

Karura Release Details:

• Scope: Client Release
• Network: Karura
• Client Version: v2.9.0
• Runtime Version: 2090
• Release Branch: release-karura-2.9.0
  • Diff: release-karura-2.8.3...release-karura-2.9.0
• Substrate version: e8a7d161
  • Diff: paritytech/substrate@6cbe177...e8a7d16
• ORML version: 8c625a5a
  • Diff: open-web3-stack/open-runtime-module-library@b57f88b...8c625a5
• Cumulus version: e43b8b87
  • Diff: paritytech/cumulus@e5889f1...e43b8b8
• Polkadot version: v0.9.26
  • Diff: paritytech/polkadot@a7e188c...d878597

Artifacts:

• Acala Docker Image: https://hub.docker.com/layers/acala-node/acala/acala-node/2.9.0/images/sha256-224e1d78878627ffb1f0721025f1a3fe158eab1e1a3ca4fb0c550b5bea97ccc9?context=explore
• Karura Docker Image: https://hub.docker.com/layers/karura-node/acala/karura-node/2.9.0/images/sha256-65fce46ec2343c42f079ff3ce8003d3d6faa98f5e80a70c2758f7c4098d73518?context=explore

Release Checklist

#2286
#2287