Reintroduced only branch master cmake.yml

Author: ZigRazor

.github/workflows/cmake.yml

@@ -2,7 +2,9 @@ name: CMake
 
 on:
   push:
+    branches: [ master ]
   pull_request:
+    branches: [ master ]
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)