[gnome-settings-daemon] tests: Update Mutter version dependency

[Carlos Garnacho <carlosg src gnome org>]

commit 3a966eb7809cb0ed119ede09f65c1006c9a4a5cd
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Mar 19 23:14:49 2022 +0100

    tests: Update Mutter version dependency
    
    This is broken comparing with stable release numbers, like 42.0. This
    version is also released, so it sounds better to simply depend on that.

 plugins/power/test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plugins/power/test.py b/plugins/power/test.py
index c35c1541..c99d384d 100755
--- a/plugins/power/test.py
+++ b/plugins/power/test.py
@@ -637,7 +637,7 @@ class PowerPluginTest4(PowerPluginBase):
                 dbus_interface='org.gnome.SessionManager')
         # At this point logind should suspend for us
 
-    @unittest.skipIf(mutter_version <= (42, 'alpha'), reason="mutter is too old and may be buggy")
+    @unittest.skipIf(mutter_version <= (42, 0), reason="mutter is too old and may be buggy")
     def test_unblank_on_lid_open(self):
         '''Check that we do unblank on lid opening, if the machine will not suspend'''