With the release of version 4.5, version 4.2 and earlier are now end-of-life.
The support structure is now as follows:
Version 4.5 - stable, supported.
Version 4.4 - maintenance support (only security and minor issues).
Version 4.3 - extended support (only via commercial support).
Online translation files for version 4.2 were deleted. Any further update to translations must be done offline.