Improve update message (#20)

* Improve update message.

* Run template check every month

Author: irm-codebase

.github/workflows/template-check-version.yml

@@ -44,6 +44,7 @@ jobs:
         if: env.UPDATE == 'true'
         run: |
           gh issue --repo ${{ github.repository }} \
-            create --title "Template update" --body "The template has been updated. Please run `copier update` and merge changes."
+          create --title "Template update" \
+          --body "The template has been updated.\n\nPlease run \`copier update\` in your local copy, review the changes, and merge them into the repository.\n\nIf you need help, refer to the \`clio\` documentation or reach out to the calliope project team."
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

template/.github/workflows/check-version.yml

@@ -2,7 +2,7 @@
 name: Template check.
 on:
   schedule:
-    - cron: '0 0 * * 1' # Runs at 00:00 UTC every Monday
+    - cron: '0 0 1 * *' # Runs at 00:00 UTC on the 1st day of every month
 
 jobs:
   copier-update: