Group dependabot updates to a single PR

Author: damyan

.github/dependabot.yml

@@ -10,8 +10,16 @@ updates:
     schedule:
       interval: "daily"
     open-pull-requests-limit: 10
+    groups:
+      gh-actions-dependencies:
+        patterns:
+          - "*"
   - package-ecosystem: "docker"
     directory: "/"
     schedule:
       interval: "daily"
     open-pull-requests-limit: 10
+    groups:
+      docker-dependencies:
+        patterns:
+          - "*"