chore: group GitHub Action updates (#168)

Co-authored-by: Cameron Ackerman <[email protected]>

Author: ldez

.github/dependabot.yml

@@ -4,6 +4,10 @@ updates:
     directory: /
     schedule:
       interval: weekly
+    groups:
+      all:
+        patterns:
+          - "*"  # Group all updates into a single larger pull request.
 
   - package-ecosystem: gomod
     directory: /