chore: schedule dependabot updates for weekends

Author: nikolay-e

.github/dependabot.yml

@@ -3,7 +3,10 @@ updates:
   - package-ecosystem: "pip"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
+      day: "saturday"
+      time: "10:00"
+      timezone: "Europe/Berlin"
     labels:
       - "dependencies"
     assignees:
@@ -19,7 +22,10 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
+      day: "sunday"
+      time: "10:00"
+      timezone: "Europe/Berlin"
     labels:
       - "dependencies"
     assignees: