Keep the list in alphabetical order

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/scripts/test-ref-configs.pl b/tests/scripts/test-ref-configs.pl
index 9fd98be..80aa87a 100755
--- a/tests/scripts/test-ref-configs.pl
+++ b/tests/scripts/test-ref-configs.pl
@@ -49,13 +49,13 @@
     'config-symmetric-only.h' => {
         'test_again_with_use_psa' => 0, # Uses PSA by default, no need to test it twice
     },
+    'config-tfm.h' => {
+        'test_again_with_use_psa' => 0, # Uses PSA by default, no need to test it twice
+    },
     'config-thread.h' => {
         'opt' => '-f ECJPAKE.*nolog',
         'test_again_with_use_psa' => 1,
     },
-    'config-tfm.h' => {
-        'test_again_with_use_psa' => 0, # Uses PSA by default, no need to test it twice
-    },
 );
 
 # If no config-name is provided, use all known configs.