Update Workflow

.github/workflows/cmake.yml

@@ -2,9 +2,9 @@ name: CMake
 
 on:
   push:
-    branches: [ develop ]
+    branches: [ $default-branch ]
   pull_request:
-    branches: [ develop ]
+    branches: [ $default-branch ]
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
@@ -15,7 +15,10 @@ jobs:
     # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
     # You can convert this to a matrix build if you need cross-platform coverage.
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+    runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/cygwin.yml

@@ -1,9 +1,9 @@
 name: Cygwin
 on:
   push:
-    branches: [ develop ]
+    branches: [ $default-branch ]
   pull_request:
-    branches: [ develop ]
+    branches: [ $default-branch ]
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)