[epiphany] flatpak: mount /run/gssproxy.sock

[Michael Catanzaro <mcatanzaro src gnome org>]

commit b1054fe135824ef7a5612dc024fbca0284e3a74d
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Tue May 3 14:46:07 2022 -0500

    flatpak: mount /run/gssproxy.sock
    
    This is for testing purposes. Eventually, we'll have flatpak do so
    instead.

 org.gnome.Epiphany.json | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/org.gnome.Epiphany.json b/org.gnome.Epiphany.json
index c86058338..8802a0d82 100644
--- a/org.gnome.Epiphany.json
+++ b/org.gnome.Epiphany.json
@@ -11,6 +11,7 @@
     "finish-args" : [
         "--device=dri",
         "--filesystem=/run/.heim_org.h5l.kcm-socket",
+        "--filesystem=/run/gssproxy.sock",
         "--filesystem=xdg-download",
         "--share=ipc",
         "--share=network",