Allow specification of minimum required poetry version

[kasium]

• I have searched the issues of this repo and believe that this is not a duplicate.
• I have searched the documentation and believe that my question is not covered.

Feature Request

A project might use newer poetry versions or rely on a poetry bug fix. Currently, the project either needs to state the minimum needed poetry version somewhere in their docs or have a kind of bootstramp to enforce that.
However, it would be nice if poetry would allow users to define that in the toml.

[tool.poetry]
poetry_version = ">1.1"

Please note, that this is different from the build backend. The main poetry version e.g. creates the lock file and here a different poetry version can make a huge differce.

In the case, that the current version doesn't match the one in the toml, a error should be raised

[finswimmer]

Hello @kasium,

this has been asked earlier in #3316.

fin swimmer

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