feat(.github/workflows): improve Dependabot auto-merge workflow

- **New Features**
  - Add Dependabot Auto-Merge workflow to automatically merge Dependabot PRs.

- **Enhancements & Refinements**
  - Remove redundant comment clarifying the workflow's Dependabot-specific execution.
  - Adjust whitespace for better YAML formatting.

.github/workflows/dependabot-auto-merge.yml

@@ -1,3 +1,4 @@
+
 name: Dependabot Auto-Merge
 
 on:
@@ -9,7 +10,6 @@ permissions:
 
 jobs:
   dependabot:
-    # Run only for Dependabot PRs
     if: github.actor == 'dependabot[bot]'
     runs-on: ubuntu-latest