Bump pyinstaller from 6.13.0 to 6.15.0

Bumps [pyinstaller](https://github.com/pyinstaller/pyinstaller) from 6.13.0 to 6.15.0.
- [Release notes](https://github.com/pyinstaller/pyinstaller/releases)
- [Changelog](https://github.com/pyinstaller/pyinstaller/blob/develop/doc/CHANGES.rst)
- [Commits](pyinstaller/pyinstaller@v6.13.0...v6.15.0)

---
updated-dependencies:
- dependency-name: pyinstaller
  dependency-version: 6.15.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]