Update signatories

Author: marcprux

public/img/logos/fulu.org.png

@@ -90,6 +90,10 @@
   url: "fastmail.com"
   poc: "Bek Fraser <bekf@fastmailteam.com>"
   region: "AU"
+- organization: "FULU Foundation"
+  url: "fulu.org"
+  poc: "Maria Palazzo <maria@fulu.org>"
+  region: "US"
 - organization: "FUTO"
   url: "futo.org"
   poc: "Michael McConnell <michaelm@futo.org>"