[gnome-photos/flatpak-ci: 2/4] tests: Switch the UI tests to Python 3

[Debarshi Ray <debarshir src gnome org>]

commit 58fd1c56a1fb1a0003a9cee493e883c5e48aaeb0
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Tue Sep 25 17:48:10 2018 +0200

    tests: Switch the UI tests to Python 3
    
    The use of Python 2 in the UI tests was related to Dogtail. These days
    Dogtail supports Python 3 [1], and GNOME Photos has a Meson build
    system that requires Python 3 anyway. Switching to Python 3 will make
    distributors trying to move away from Python 2 (eg., Fedora and RHEL 8)
    happier.
    
    [1] https://gitlab.com/dogtail/dogtail/commit/36b6873eaaec61be
    
    https://gitlab.gnome.org/GNOME/gnome-photos/merge_requests/46

 tests/basic.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/basic.py b/tests/basic.py
index 5cdf04b0..604ec9cb 100755
--- a/tests/basic.py
+++ b/tests/basic.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 
 from testutil import *