GH Actions: fix gen_bindings.yml workflow file

.github/workflows/gen_bindings.yml

@@ -50,4 +50,4 @@ jobs:
             sudo apt-get update
             sudo apt-get install libglu1-mesa-dev mesa-common-dev xorg-dev libasound-dev
         - name: build
-          run: zig build
+          run: zig build