chore: Remove custom schedule from Dependabot config

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: runningcode

.github/dependabot.yml

@@ -11,10 +11,8 @@ updates:
     registries:
       - gradle-plugin-portal
     schedule:
-      interval: "daily"
-      time: "02:00"
+      interval: "weekly"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "daily"
-      time: "02:00"
+      interval: "weekly"