lock on push, update .github/workflows/build-nabla.yml

Author: AnastaZIuk

.github/workflows/build-nabla.yml

@@ -5,6 +5,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: push-lock-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-windows:
     runs-on: windows-2022