CI: try fixing Win32 build

Author: CarterLi

.github/workflows/ci.yml

@@ -484,7 +484,7 @@ jobs:
         with:
           msystem: CLANG32
           update: true
-          install: git mingw-w64-clang-i686-7zip mingw-w64-clang-i686-cmake mingw-w64-clang-i686-clang mingw-w64-clang-i686-vulkan-loader mingw-w64-clang-i686-vulkan-headers mingw-w64-clang-i686-opencl-icd
+          install: git p7zip mingw-w64-clang-i686-cmake mingw-w64-clang-i686-clang mingw-w64-clang-i686-vulkan-loader mingw-w64-clang-i686-vulkan-headers mingw-w64-clang-i686-opencl-icd
 
       - name: print msys version
         run: uname -a