chore: configure dependabot to do weekly updates (#53)

* chore: configure dependabot to weekly updates

Additionally, group k8s.io deps.

* Update dependabot.yaml

Author: matifali

.github/dependabot.yaml

@@ -5,8 +5,12 @@ updates:
   - package-ecosystem: "gomod"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
+    groups:
+      k8s:
+        pattern: 
+          - "k8s.io/*"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"