message: Update to use newer Mingw-w64 build image
diff: @@ -26,7 +26,7 @@ jobs:
  - build
  build-linux-mingw:
  docker:
  - - image: outpostuniverse/nas2d-mingw:1.3
  + - image: outpostuniverse/nas2d-mingw:1.4
  steps:
  - checkout
  - run: git submodule update --init
  