Synchronise dependabot config across projects

Easy management by grouping actions updates

Author: chadlwilson

.github/dependabot.yml

@@ -1,12 +1,16 @@
 version: 2
 updates:
-- package-ecosystem: "github-actions"
-  directory: "/"
-  schedule:
-    interval: monthly
-- package-ecosystem: gradle
-  directory: "/"
-  schedule:
-    interval: monthly
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly
+    groups:
+      github-actions:
+        patterns:
+          - *
+  - package-ecosystem: gradle
+    directory: /
+    schedule:
+      interval: monthly
   open-pull-requests-limit: 99