pdm 1.15.2 on Python PyPI

Fix bug where SIGINT is sent to the main pdm process and not to the process actually being run. #1095
Fix a bug due to the build backend fallback, which causes different versions of the same requirement to exist in the build environment, making the building unstable depending on which version being used. #1099
Don't include the version in the cache key of the locked candidates if they are from a URL requirement. #1099
Fix a bug where dependencies with requires-python pre-release versions caused pdm update to fail with InvalidPyVersion. #1111

pdm 1.15.2 v1.15.2 on Python PyPI