Update ex-Stacklok affiliations (ossf#336)

Signed-off-by: Evan Anderson <evan.k.anderson@gmail.com>

Author: evankanderson

governance/MAINTAINERS.md

@@ -3,11 +3,11 @@
 ## Project Maintainers
 
 - Eddie Knight, Sonatype (@eddie-knight)
-- Adolfo García Veytia, Stacklok (@puerco)
+- Adolfo García Veytia, Independent (@puerco)
 - Christopher "CRob" Robinson, OpenSSF (@SecurityCRob)
 - David A Wheeler, OpenSSF (@david-a-wheeler)
 - Ben Cotton, Kusari (@funnelfiasco)
-- Evan Anderson, Stacklok (@evankanderson)
+- Evan Anderson, Custcodian (@evankanderson)
 
 ## Emeritus Maintainers