_newlib_version.h not filled with data

[Mara Sophie Grosch]

Hi,

looks like current master is broken, not filling the macros in _newlib_version.h with data - it stays unprocessed.

Just stumbled over this while building for my hobby OS target, but
someone else stumbled over this, too [1].

Sadly no idea how to fix this :/

Best, Mara

[1] https://stackoverflow.com/questions/73444689/macros-defined-in-newlib-version-h-are-not-filled-with-actual-value