Bump ACTS version to v15.0.1
Changes since v15.0.0 should only include a bug fix related to https://its.cern.ch/jira/browse/ATR-24723.
Changelog can be found here: https://github.com/acts-project/acts/releases/tag/v15.0.1
Changes since v15.0.0 should only include a bug fix related to https://its.cern.ch/jira/browse/ATR-24723.
Changelog can be found here: https://github.com/acts-project/acts/releases/tag/v15.0.1