fix: remove --json flag for gh CLI compatibility

The older version of gh CLI in GitHub Actions runners doesn't support
the --json flag, causing PR creation to fail.

Changes:
- Removed --json flag from gh pr create
- Removed jq parsing (not needed)
- Use exit code to detect success/failure
- Simplified PR existence check
- More compatible with older gh CLI versions

This fixes the error:
❌ PR creation failed: unknown flag: --json

The workflow will now:
✅ Create PRs successfully
✅ Handle duplicates gracefully
✅ Work with both old and new gh CLI versions

.github/workflows/update-version.yml

@@ -155,28 +155,27 @@ jobs:
           > **Note:** This PR was created with force mode enabled."
           fi
 
-          # Create PR with JSON output for reliable success detection
-          PR_RESULT=$(gh pr create \
+          # Create PR (compatible with older gh CLI versions)
+          set +e
+          PR_URL=$(gh pr create \
             --title "chore: update WhatsApp Web version" \
             --body "$PR_BODY" \
             --base master \
-            --head "$BRANCH_NAME" \
-            --json url,number 2>&1) || PR_CREATE_FAILED=true
+            --head "$BRANCH_NAME" 2>&1)
+          PR_CREATE_EXIT=$?
+          set -e
 
-          # Check if PR was created successfully by parsing JSON
-          if [ -z "$PR_CREATE_FAILED" ] && echo "$PR_RESULT" | jq -e '.url' > /dev/null 2>&1; then
-            PR_URL=$(echo "$PR_RESULT" | jq -r '.url')
-            PR_NUMBER=$(echo "$PR_RESULT" | jq -r '.number')
-            echo "PR created successfully: $PR_URL (PR #$PR_NUMBER)"
+          if [ $PR_CREATE_EXIT -eq 0 ]; then
+            echo "✅ PR created successfully: $PR_URL"
 
             # Auto-merge the PR (squash merge)
             # Note: This requires branch protection rules to be satisfied
             # If checks haven't completed yet, auto-merge will queue the merge
             echo "Attempting to enable auto-merge..."
-            if gh pr merge "$BRANCH_NAME" --squash --auto --delete-branch; then
+            if gh pr merge "$BRANCH_NAME" --squash --auto --delete-branch 2>/dev/null; then
               echo "✅ Auto-merge enabled - PR will merge automatically when checks pass"
             else
-              echo "⚠️ Auto-merge not available - PR #$PR_NUMBER created for manual review"
+              echo "⚠️ Auto-merge not available - PR created for manual review"
               echo "This may happen if:"
               echo "  - Required status checks haven't completed yet"
               echo "  - Branch protection rules require manual approval"
@@ -185,13 +184,16 @@ jobs:
           else
             # PR creation failed - could be duplicate or other error
             echo "⚠️ Could not create PR. Checking if PR already exists..."
-            EXISTING_PR=$(gh pr list --head "$BRANCH_NAME" --json number,url --jq '.[0]')
+
+            # Check for existing PR (without --json for compatibility)
+            EXISTING_PR=$(gh pr list --head "$BRANCH_NAME" --state open 2>/dev/null | head -1)
+
             if [ -n "$EXISTING_PR" ]; then
-              EXISTING_URL=$(echo "$EXISTING_PR" | jq -r '.url')
-              EXISTING_NUMBER=$(echo "$EXISTING_PR" | jq -r '.number')
-              echo "PR already exists: $EXISTING_URL (PR #$EXISTING_NUMBER)"
+              echo "ℹ️ PR already exists for branch $BRANCH_NAME"
+              echo "$EXISTING_PR"
             else
-              echo "❌ PR creation failed: $PR_RESULT"
+              echo "❌ PR creation failed with error:"
+              echo "$PR_URL"
             fi
           fi