Update build.yml

Author: uNetworkingAB

.github/workflows/build.yml

@@ -25,6 +25,7 @@ jobs:
           git clone --recursive https://github.com/uNetworking/uWebSockets.js.git
           cd uWebSockets.js
           ${{ matrix.os == 'windows-latest' && 'nmake' || 'make' }}
+          ls dist
           git fetch origin binaries:binaries
           git checkout binaries
           cp dist/*.node .