Env: Bootstrap environment V13

What

Ah look, a wild environment appeared!

Why

We need it for upgrading the WASM PVM.

How

Just followed these guidelines which remain pretty good even today. and since it was not enough, I’ve used !11158 (merged) as a source of inspiration as well.

Manually testing the MR

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR