dependabot to group PRs (#557)

* dependabot to group PRs

* fix target-branch

* reduce diff

* reduce diff

* reduce diff

Author: haitch

.github/dependabot.yml

@@ -10,9 +10,17 @@ updates:
     directory: / # Location of package manifests
     schedule:
       interval: weekly
+    groups:
+      gomod:
+        applies-to: version-updates
+        dependency-type: production
 
   - package-ecosystem: github-actions
     target-branch: v3
     directory: /
     schedule:
-      interval: weekly
+      interval: weekly
+    groups:
+      github-actions:
+        applies-to: version-updates
+        dependency-type: production