Reverted a version fix within the XML file.
Reverted a version fix within the XML file.

- needs further fixes, sadly the version has always just showed the major and minor version in the exports
- This masked an issue that would block the import of events that are even a hotfix away

- As a temporary fix, I reverted the changes and the XML version field will now only show the major and minor version to restore compatibility (so 2.4.0 instead of 2.4.19)

FIRSTdotorg/MISP,Rafiot/MISP,SteveClement/MISP,TheDr1ver/MISP,cristianbell/MISP,MISP/MISP,SteveClement/MISP,TheDr1ver/MISP,crruthe/MISP,MISP/MISP,cristianbell/MISP,TheDr1ver/MISP,Rafiot/MISP,FIRSTdotorg/MISP,TheDr1ver/MISP,FIRSTdotorg/MISP,Rafiot/MISP,SteveClement/MISP,FloatingGhost/MISP,MISP/MISP,cristianbell/MISP,SteveClement/MISP,FIRSTdotorg/MISP,devnull-/MISP,crruthe/MISP,crruthe/MISP,MISP/MISP,devnull-/MISP,crruthe/MISP,devnull-/MISP,cristianbell/MISP,SteveClement/MISP,RichieB2B/MISP,Rafiot/MISP,RichieB2B/MISP,FloatingGhost/MISP,devnull-/MISP,RichieB2B/MISP,FloatingGhost/MISP,MISP/MISP,FloatingGhost/MISP,RichieB2B/MISP