MAINTAINERS: Add fuel-gauge DBS06 maintainer

DBS06 has been consistently contributing and reviewing fuel gauge
changes. Given how much additional support they have added we should add
them as a maintainer.

Signed-off-by: Aaron Massey <[email protected]>

Author: aaronemassey

MAINTAINERS.yml

@@ -1639,6 +1639,7 @@ Documentation Infrastructure:
   status: maintained
   maintainers:
     - aaronemassey
+    - DBS06
     - teburd
   collaborators:
     - DBS06