change scheduled actions to run once a week (#633)

Author: sbSteveK

.github/workflows/handle-stale-discussions.yml

@@ -1,7 +1,7 @@
 name: HandleStaleDiscussions
 on:
   schedule:
-    - cron: '0 */4 * * *'
+    - cron: '0 9 * * 1' # minute hour dom month dow
   discussion_comment:
     types: [created]
 

.github/workflows/stale-issue.yml

@@ -3,7 +3,7 @@ name: "Close stale issues"
 # Controls when the action will run.
 on:
   schedule:
-    - cron: "*/60 * * * *"
+    - cron: '0 9 * * 1' # minute hour dom month dow
 
 jobs:
   cleanup: