Add dependabot group for rubocop* bundler updates (#24)

* Initial plan

* Add dependabot group for rubocop* bundler updates

Co-authored-by: markhallen <420873+markhallen@users.noreply.github.com>

* Fix dependabot config error: change dependency-type from "direct" to "development"

Co-authored-by: markhallen <420873+markhallen@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: markhallen <420873+markhallen@users.noreply.github.com>

Author: Copilot

.github/dependabot.yml

@@ -17,6 +17,10 @@ updates:
       - "ruby"
     # Group patch updates together
     groups:
+      rubocop:
+        patterns:
+          - "rubocop*"
+        dependency-type: "development"
       patch-updates:
         patterns:
           - "*"