Update dependency pdm to v2.15.2

[RKIMetadataExchange]

This PR contains the following updates:

Package	Update	Change
pdm (changelog)	patch	==2.15.1 -> ==2.15.2

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Release Notes

pdm-project/pdm (pdm)

v2.15.2

Compare Source

Features & Improvements

• Use get_runner() method to build the task runner in run command. runner_cls attribute is deprecated. (#​2872)

Bug Fixes

• Expand ${PROJECT_ROOT} in source URLs. (#​2846)
• Fix env and other options being inherited in nested composite scripts. (#​2849)
• Keep the ${PROJECT_ROOT} variable in dependencies after running pdm lock --update-reuse. (#​2852)
• Make direct_minimal_versions work on newly added dependencies. (#​2853)
• Fix a syntax error in the zsh completion script. (#​2868)

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