Update dependency poetry to v2.1.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
poetry (changelog)	2.1.3 -> 2.1.4

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Release Notes

python-poetry/poetry (poetry)

v2.1.4

Compare Source

Changed

• Require virtualenv<20.33 to work around an issue where Poetry uses the wrong Python version (#​10491).
• Improve the error messages for the validation of the pyproject.toml file (#​10471).

Fixed

• Fix an issue where project plugins were installed even though poetry install was called with --no-plugins (#​10405).
• Fix an issue where dependency resolution failed for self-referential extras with duplicate dependencies (#​10488).

Docs

• Clarify how to include files that were automatically excluded via VCS ignore settings (#​10442).
• Clarify the behavior of poetry add if no version constraint is explicitly specified (#​10445).

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