Trying to fix github actions.

.github/workflows/cmake.yml

@@ -17,16 +17,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-latest, macos-latest ]
-        allow_failure: false
-        include:
-          - os: macos-latest
-            allow_failure: true
+        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-latest ]
+        allow_failure: [false]
+        # include:
+        #  - os: macos-latest
+        #    allow_failure: true
 
     steps:
     - uses: actions/checkout@v2
       with:
-        submodule: true
+        submodules: true
 
     - name: Configure CMake
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}