[epiphany/gnome-40] Pin flatpak manifests to libportal 0.4

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 6451e0f98ccf6cb34bd1a775ddba8c10b3b66d56
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Tue Nov 9 13:42:08 2021 -0600

    Pin flatpak manifests to libportal 0.4
    
    Let's pin until libportal API stabilizes.
    
    Fixes #1621
    
    Part-of: <https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1027>
    
    (cherry picked from commit 62b3407677d257c037136925bb220521ce3ef2eb)

 org.gnome.Epiphany.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/org.gnome.Epiphany.json b/org.gnome.Epiphany.json
index f5d0f73a3..817fdf712 100644
--- a/org.gnome.Epiphany.json
+++ b/org.gnome.Epiphany.json
@@ -108,7 +108,8 @@
             "sources" : [
                 {
                     "type" : "git",
-                    "url" : "https://github.com/flatpak/libportal.git";
+                    "url" : "https://github.com/flatpak/libportal.git";,
+                    "tag" : "0.4"
                 }
             ]
         },