Fix YAML syntax errors in delete-inactive-tailnet-nodes workflow

- Remove control characters that were causing YAML parsing errors
- Clean up echo statements to remove special characters
- Add proper newline at end of file
- Ensure workflow only runs on manual trigger (workflow_dispatch)

Author: rajsinghtech

.github/workflows/delete-inactive-tailnet-nodes.yml

@@ -166,10 +166,10 @@ jobs:
             HTTP_STATUS=$(echo "$RESPONSE" | tail -n 1 | cut -d: -f2)
             
             if [ "$HTTP_STATUS" = "200" ]; then
-              echo " Successfully deleted device: $DEVICE_NAME"
+              echo "Successfully deleted device: $DEVICE_NAME"
               SUCCESS_COUNT=$((SUCCESS_COUNT + 1))
             else
-              echo "L Failed to delete device: $DEVICE_NAME (HTTP Status: $HTTP_STATUS)"
+              echo "Failed to delete device: $DEVICE_NAME (HTTP Status: $HTTP_STATUS)"
               RESPONSE_BODY=$(echo "$RESPONSE" | sed '$d')
               echo "Error response: $RESPONSE_BODY"
               FAILED_COUNT=$((FAILED_COUNT + 1))
@@ -200,4 +200,4 @@ jobs:
         if: inputs.dry_run == false && steps.filter_devices.outputs.devices_count != '0'
         run: |
           echo "Fetching updated device list..."
-          ./tailscale/scripts/list-devices.sh "${{ steps.get_access_token.outputs.access_token }}" "${{ inputs.tailnet_name }}" table || true
+          ./tailscale/scripts/list-devices.sh "${{ steps.get_access_token.outputs.access_token }}" "${{ inputs.tailnet_name }}" table || true