Run cli tests daily (#449)

* Add cron job to main.yml to run tests every weekday morning

* Update cron job to only run on weekdays

Author: FayeSGW

.github/workflows/main.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - "**"
+  schedule:
+    - cron: "0 9 * * 1,2,3,4,5"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}