Temporarily disable mingw32 for upstream error

Author: mborland

.github/workflows/ci.yml

@@ -680,7 +680,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { sys: MINGW32, compiler: gcc, cxxstd: '03,11,17,20' }
+          #- { sys: MINGW32, compiler: gcc, cxxstd: '03,11,17,20' }
           - { sys: MINGW64, compiler: gcc, cxxstd: '03,11,17,20' }
 
     runs-on: windows-latest