Results of two runs of pre-commit run --all -- still fails due to "prospector"

[yarikoptic]

Apparently either pre-commit was not "applied" throughout the codebase or may be versions of the tools are insufficiently pin'ed down -- that results in pre-commit introducing changes to the files if ran through the entire clean codebase. IMHO it is very undesired since could interfere with actual changes, making PRs harder to review etc.

note that it even applies to vendor/ folder.

This PR is more of a demonstration of a problem than something to be merged, thus - making it draft.

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:books: Documentation previews :books:

• User's documentation (docs): https://docs--11199.org.readthedocs.build/en/11199/

• Developer's documentation (dev): https://dev--11199.org.readthedocs.build/en/11199/