maintainers.yml: litex: move kgugala to collaborator

move kgugala from maintainers to litex collaborators.

Signed-off-by: Fin Maaß <[email protected]>

Author: maass-hamburg

MAINTAINERS.yml

@@ -3066,10 +3066,10 @@ LiteX Platforms:
   status: maintained
   maintainers:
     - tgorochowik
-    - kgugala
     - fkokosinski
     - maass-hamburg
   collaborators:
+    - kgugala
     - mateusz-holenko
   files:
     - boards/enjoydigital/litex_vexriscv/