gvfs: fix CVE-2019-12795

Vulnerability Description:
daemon/gvfsdaemon.c in gvfsd from GNOME gvfs before 1.38.3, 1.40.x before
1.40.2, and 1.41.x before 1.41.3 opened a private D-Bus server socket without
configuring an authorization rule. A local attacker could connect to this server
socket and issue D-Bus method calls. Note that the server socket only accepts
a single connection, so the attacker would have to discover the server and connect
to the socket before its owner does.

Closes #63301

pkgs/development/libraries/gvfs/default.nix

···
       url = "https://gitlab.gnome.org/GNOME/gvfs/commit/bed1e9685c9f65f6a3ff3b39dd8547db3e7e77f6.patch";
       sha256 = "0hfybfaz2gfx3yyw5ymx6q0pqwkx2r1i7gzprfp80bplwslq0d4h";
     })
+    # CVE-2019-12795
+    (fetchpatch {
+      url = "https://gitlab.gnome.org/GNOME/gvfs/commit/e3808a1b4042761055b1d975333a8243d67b8bfe.patch";
+      sha256 = "1lx6yxykx24mnq5izijqk744zj6rgww6ba76z0qjal4y0z3gsdqp";
+    })
   ];
 
   postPatch = ''