Change scheduled tasks to monthly

Trying to reduce the dependabot PR noise now, especially given dependencies have been reduced a lot

Author: chadlwilson

.github/dependabot.yml

@@ -3,11 +3,9 @@ updates:
 - package-ecosystem: gradle
   directory: "/"
   schedule:
-    interval: weekly
-    day: friday
+    interval: monthly
   open-pull-requests-limit: 99
 - package-ecosystem: "github-actions"
   directory: "/"
   schedule:
-    interval: weekly
-    day: friday
+    interval: monthly

.github/workflows/update-gradle-wrapper.yml

@@ -2,7 +2,7 @@ name: Update Gradle Wrapper
 
 on:
   schedule:
-    - cron: "0 0 * * *"
+    - cron: "0 0 1 * *"
   workflow_dispatch:
 
 jobs: