static-passwd-meta-oe: add flatpak user

Signed-off-by: Markus Volk <f_l_k@t-online.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/files/static-passwd-meta-oe

@@ -10,3 +10,5 @@ pcpqa:x:621:nogroup::/:/bin/nologin
 influxdb:x:622:influxdb::/var/lib/influxdb:/bin/nologin
 mongodb:x:623:nogroup::/:/bin/nologin
 gpio-manager:x:624:gpio::/:/bin/nologin
+flatpak:x:625:625:Flatpak system helper:/:/sbin/nologin
+