update dependabot to groups (#244)

Author: abice

.github/dependabot.yml

@@ -4,7 +4,21 @@ updates:
     directory: /
     schedule:
       interval: weekly
+    groups:
+      major:
+        update-types:
+          - major
+      minor:
+        update-types:
+          - minor
+          - patch
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
       interval: weekly
+    groups:
+      actions:
+        update-types:
+          - major
+          - minor
+          - patch