chore: update dependabot configuration for github-actions (#345)

Author: GarrettBeatty

.github/dependabot.yml

@@ -1,13 +1,17 @@
-# Set update schedule for GitHub Actions
-
 version: 2
 updates:
 
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      # Check for updates to GitHub Actions every week
+      # Check for updates to GitHub Actions every quarter
       interval: "quarterly"
     labels:
       - "Release Not Needed"
     target-branch: "dev"
+    # Group all github-actions updates into a single PR
+    groups:
+      all-github-actions:
+        applies-to: "version-updates"
+        patterns:
+          - "*"