ci: Add groupings to dependabot.yml (#2459)

.github/dependabot.yml

@@ -1,15 +1,31 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
+---
 version: 2
 updates:
-  - package-ecosystem: github-actions
+  - package-ecosystem: gomod
     directory: /
     schedule:
       interval: weekly
-  - package-ecosystem: gomod
+    groups:
+      k8s:
+        patterns:
+          - "*k8s*"
+      testcontainers:
+        patterns:
+          - github.com/testcontainers/*
+      common:
+        patterns:
+          - "*"
+      golang:
+        patterns:
+          - go*
+      aqua:
+        patterns:
+          - "*aquasecurity*"
+  - package-ecosystem: github-actions
     directory: /
     schedule:
-      interval: weekly
+      interval: monthly
+    groups:
+      github-actions:
+        patterns:
+          - "*"