maint: Point to the https download instead of plain http

Author: kaiw

maint

@@ -38,7 +38,7 @@ NEWS_TEMPLATE = """
 
 EMAIL_TEMPLATE = """
 {{ app|title }} {{version}} has been released, and is now available at:
-  http://download.gnome.org/sources/meld/{{ version|minor_version }}/{{ app }}-{{ version }}.tar.xz
+  https://download.gnome.org/sources/meld/{{ version|minor_version }}/{{ app }}-{{ version }}.tar.xz
 {%- if features %}