Build(deps): Bump pdm from 2.15.3 to 2.15.4

Bumps [pdm](https://github.com/pdm-project/pdm) from 2.15.3 to 2.15.4.
- [Release notes](https://github.com/pdm-project/pdm/releases)
- [Changelog](https://github.com/pdm-project/pdm/blob/main/CHANGELOG.md)
- [Commits](pdm-project/pdm@2.15.3...2.15.4)

---
updated-dependencies:
- dependency-name: pdm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]