fix(poetry): normalize package name

[dave-powell-kensho]

Changes

(poetry) Normalize project names read from pyproject.toml in adherence with PEP 503 and PEP 621. poetry stores normalized project names in poetry.lock files, so without this normalization on the data read from the pyproject.toml files, there may be a misalignment leading to renovate not being able to update the lockfile.

For example, a valid entry in pyproject.toml may read as prometheus_client, but is represented in the lockfile as prometheus-client.

Documentation (please check one with an [x])

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I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[renovate-release]

🎉 This PR is included in version 34.102.1 🎉

The release is available on:

• GitHub release
• 34.102.1

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