fix: machete workflow - use squash commit instead merge

.github/workflows/machete.yml

@@ -2,7 +2,7 @@ name: machete
 
 on:
   schedule:
-    - cron: '0 8 * * *'
+    - cron: "0 8 * * *"
   workflow_dispatch:
 
 permissions:
@@ -63,14 +63,14 @@ jobs:
             git push https://x-access-token:${{ secrets.DELTA_BOT_GH_TOKEN }}@github.com/${{ github.repository }} $BRANCH_NAME
             echo "Changes committed and pushed to $BRANCH_NAME"
             echo "Attempting to create a pull request..."
-          
+
             # Create a pull request
             PR_URL=$(gh pr create --base master --head $BRANCH_NAME --title "Fix unused dependencies" --body "This PR fixes unused dependencies found by cargo machete." --draft=false --label "dependencies")
             echo "Pull request created: $PR_URL"
-          
+
             # Automatically merge the pull request after it meets the requirements
-            gh pr merge "$PR_URL" --merge --delete-branch
+            gh pr merge "$PR_URL" --squash --delete-branch
             echo "Pull request merged and branch deleted."
           else
             echo "No changes detected. No commit or push."
-          fi
+          fi