Update signatories

Author: marcprux

public/img/logos/fosdem.org.png

@@ -90,6 +90,10 @@
   url: "fastmail.com"
   poc: "Bek Fraser <bekf@fastmailteam.com>"
   region: "AU"
+- organization: "FOSDEM"
+  url: "fosdem.org"
+  poc: "Gerry Demaret <gerry@fosdem.org>"
+  region: "BE"
 - organization: "FULU Foundation"
   url: "fulu.org"
   poc: "Maria Palazzo <maria@fulu.org>"
@@ -151,9 +155,17 @@
   url: "nextcloud.com"
   poc: "Jos Poortvliet <jos.poortvliet@nextcloud.com>"
   region: "DE"
+- organization: "OW2"
+  url: "ow2.org"
+  poc: "Pierre-Yves Gibello <pierre-yves.gibello@ow2.org>"
+  region: "FR"
 - organization: "Obtainium"
   url: "obtainium.imranr.dev"
   poc: "Imran <contact@imranr.dev>"
+- organization: "OpenMedia"
+  url: "openmedia.org"
+  poc: "Matt Hatfield <matt@openmedia.org>"
+  region: "CA"
 - organization: "The OpenStreetMap Foundation (OSMF)"
   url: "osmfoundation.org"
   poc: "Héctor Ochoa Ortiz <hector.ochoa.ortiz@osmfoundation.org>"