Upgrade to runtime v1.20.0

Here are 5 important points about the SubSquare post:

• Kintsugi has been updated to the latest version, which means some changes have been made.
• The updates include changes to the core dependencies and a new weight handling system.
• If you want to know more about the updates, you can check out the links provided in the post.
• There is a request to fast-track the referendum to execute on 1 December 2022 10am UTC.
• The post also includes a code hash, which is a unique code that helps identify the changes made to Kintsugi.