Follow up the Chang hard fork

[jpraynaud]

Why

Once the Chang hard-fork has taken place, we need to make sure the mainnet networks work as expected and to follow-up with Cardano hot fixes if any.

What

Check that Mithril mainnet networks are working properly after the Chang hard-fork, and apply Cardano hot fixes if necessary.

How

• Check that mainnet Mithril networks operate properly:
  • dev-mainnet
  • testing-mainnet
  • release-mainnet
• Manual restart of the Cardano nodes on the mainnet:
  • dev-mainnet
  • testing-mainnet
  • release-mainnet
• Upgrade Cardano node 9.1.1
  • dev-mainnet
  • testing-mainnet
  • testing-preview
  • testing-sanchonet
  • pre-release-preview (will be done with Release 2437 distribution #1901)
  • release-preprod (will be done with Release 2437 distribution #1901)
  • release-mainnet (will be done with Release 2437 distribution #1901)
• Clean devnet from hacks for now unsupported versions (<9.0.0)