Please clarify which LGPL version applies

[KEO-RSP]

Dear maintainers,

in COPYING we find the text of LGPL 2.1. However, when I run LicenseCheck over a Python project that depends on python-zeroconf 0.147.0, it states LGPL-2.1-or-later, most likely due to what you specify in pyproject.toml. Please clarify whether you actually wish to allow the "or later" option. Ideally, state this somewhere in writing, e.g. in the README.

Kind regards,
Robert