fix(mac): .kmx max file version is now 0x0E00 (14.0)

Fixes #5316.

Keyman for macOS did not recognise the updated version number 0x0E00,
which is version 14.0. There are no changes to the file format which
impact Keyman for macOS -- the only change is support for notany and
context for Keyman Engine for Web.