chore: remove dependabot version-update config

themes/bonsai/.github/dependabot.yml

@@ -1,11 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: github-actions
-    directory: /
-    schedule:
-      interval: weekly
-      day: monday
-    open-pull-requests-limit: 5
-    commit-message:
-      prefix: chore
-      include: scope