Disable dependentbot (#23)

diff --git a/.asf.yaml b/.asf.yaml
index 8809ba4..ddd932d 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -28,6 +28,7 @@
     squash:  true
     merge:   false
     rebase:  false
+  dependabot_updates: false
   protected_branches:
     main:
       required_status_checks: