fix CI

Author: Remi-Gau

.github/workflows/run_tests.yml

@@ -23,7 +23,7 @@ on:
   pull_request:
     branches: ['*']
   schedule:
-    - cron: "* * 1 * *"
+    - cron: "* 1 1 * *"
 
 env:
   OCTFLAGS: --no-gui --no-window-system --silent