Dependabot: group updates

.github/dependabot.yml

@@ -1,26 +1,29 @@
 version: 2
 updates:
-  - package-ecosystem: npm
+  - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: monthly
-      day: tuesday
-      time: "11:30"
-      timezone: Europe/Athens
-    reviewers:
-      - XhmikosR
     labels:
       - dependencies
-    versioning-strategy: increase
-  - package-ecosystem: "github-actions"
+      - github_actions
+    reviewers:
+      - XhmikosR
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+  - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: monthly
-      day: tuesday
-      time: "11:30"
-      timezone: Europe/Athens
-    reviewers:
-      - XhmikosR
     labels:
       - dependencies
-      - github_actions
+    reviewers:
+      - XhmikosR
+    versioning-strategy: increase
+    groups:
+      production-dependencies:
+        dependency-type: "production"
+      development-dependencies:
+        dependency-type: "development"