Update dependency pdm to v2.18.1

[RKIMetadataExchange]

This PR contains the following updates:

Package	Update	Change
pdm (changelog)	minor	==2.17.3 -> ==2.18.1

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Release Notes

pdm-project/pdm (pdm)

v2.18.1

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Bug Fixes

• Skip checking project.name if it is absent when running pdm outdated. (#​3095)
• Don't remove the cross_platform strategy from old lock files. (#​3105)
• Fix a bug that the VCS revision is lost if the candidate metadata is cached during resolution. (#​3107)
• Fix a bug that PDM can't delete source password when saved in keyring. (#​3108)

v2.18.0

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Features & Improvements

• Respect certificates in env vars REQUESTS_CA_BUNDLE and CURL_CA_BUNDLE when verifying SSL certificates. (#​3076)
• Allow pypi.verify_ssl to be configured via PDM_PYPI_VERIFY_SSL environmental variable. (#​3081)
• Clean logs older than 7 days. (#​3091)
• Polish the UI looking of locking packages to display the progress. (#​3100)

Bug Fixes

• Fixed pdm venv activate to remove quotes such that iex (pdm venv activate) works correctly (#​2895)
• Don't crash if the version can't be resolved from the self project. (#​3077)
• Don't fail install-pdm.py if there is an invalid pyproject.toml file under the current directory. (#​3085)
• Make it able to expand env vars in the the dotenv file. Expose PDM_PROJECT_ROOT to the dotenv file for expansion. (#​3087)
• Fix a bug that Python markers from the existing locked packages are considered when locking with --append option. (#​3089)
• Backfill urls from configured indexed when exporting to requirements.txt. (#​3094)
• Consider the auto-selected Python range when installing from requirements.txt. (#​3095)
• Fix a bug that env vars do not override project config correctly. (#​3099)

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