[openqa-tests/sam/ci] Allow more time for install step

[Sam Thursfield <sthursfield src gnome org>]

commit 7697b34a47912fbdebd62b2ff16027f7e48f59cf
Author: Sam Thursfield <sam thursfield codethink co uk>
Date:   Wed Sep 21 17:14:13 2022 +0200

    Allow more time for install step
    
    It appears to be timing out, e.g. https://openqa.gnome.org/tests/143/

 tests/gnome_install.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/gnome_install.pm b/tests/gnome_install.pm
index 0b8a600..a875939 100644
--- a/tests/gnome_install.pm
+++ b/tests/gnome_install.pm
@@ -8,7 +8,7 @@ sub run {
     assert_and_click('gnome_install_disk', timeout => 10, button => 'left');
     assert_and_click('gnome_install_disk2', timeout => 10, button => 'left');
     assert_screen('gnome_install_reformatting1', timeout => 120);
-    assert_screen('gnome_install_complete', timeout => 120);
+    assert_screen('gnome_install_complete', timeout => 180);
     eject_cd;
     power('reset');
 }