Add groups config

.github/dependabot.yml

@@ -1,11 +1,19 @@
----
 version: 2
 updates:
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "daily"
+    target-branch: develop
     # Always increase the version requirement
     # to match the new version.
     versioning-strategy: increase
-...
+    groups:
+       # Specify a name for the group, which will be used in pull request titles
+       # and branch names
+       dev-dependencies:
+          # Define patterns to include dependencies in the group (based on
+          # dependency name)
+          applies-to: version-updates # Applies the group rule to version updates
+            - "*"       # A wildcard that matches all dependencies in the package
+                        # ecosystem. Note: using "*" may open a large pull request