[gnome-shell] Use HTTPS URLs for the submodules

[Mathieu Bridon <mbridon src gnome org>]

commit 619a69d53c4288dfb880724fd51eeb1fb8f99c28
Author: Mathieu Bridon <bochecha daitauha fr>
Date:   Wed Aug 2 16:25:44 2017 +0200

    Use HTTPS URLs for the submodules
    
    The git protocol is usually blocked in conference/hotel networks, and it
    is vulnerable to MITM attacks.

 .gitmodules |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitmodules b/.gitmodules
index 9546d8c..475cfb5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "data/theme/gnome-shell-sass"]
        path = data/theme/gnome-shell-sass
-       url = git://git.gnome.org/gnome-shell-sass
+       url = https://git.gnome.org/browse/gnome-shell-sass
 [submodule "subprojects/gvc"]
        path = subprojects/gvc
-       url = git://git.gnome.org/libgnome-volume-control
+       url = https://git.gnome.org/browse/libgnome-volume-control