Update test configs

Author: morzhovets

.github/workflows/msvc_clang.yml

@@ -10,7 +10,11 @@ jobs:
 
         - win_ver: '2022'
           build_type: 'Release'
-          flags: '/std:c++latest -msse2'
+          flags: '-std:c++latest -msse2'
+
+        - win_ver: '2022'
+          build_type: 'Debug'
+          flags: '-std:c++latest -msse2'
 
     runs-on: windows-${{ matrix.win_ver }}